Minor characters in season 1 •
Michael "Mike" Donovan (Jim Abele) is a 42-year-old pastor and church choir conductor who raped and killed at least three young boys, Corey Balanti, Tyler Kale, and Joe Bigalow. He is Dexter's first victim shown in the series. Dexter chokes him inside his station wagon, forces him to drive to a pump station on the outskirts of Miami, and forces him to look at his victims' bodies. Dexter then kills him with a hand saw, at the site where Donovan had buried several of his victims (whom Dexter exhumes and shows to Donovan shortly before Donovan dies). Donovan's wife comes to the station the next day to report her husband's disappearance. Dexter shows particular anger towards Donovan; it's unclear, at that point, whether it stems from Dexter's having a personal hate for pedophiles or the writers' still finding the character of Dexter. In
Darkly Dreaming Dexter, this character is referred to as "Father Donovan", suggesting he is a
Catholic priest. There is no mention of his having a family. Unlike the television show, Father Donovan's victims include both boys and girls. Also, he thanks Dexter for killing him, recognising his own "sickness" and grateful for the relief. In the novel, Donovan is killed inside a house and the child victims had been buried in a garden. •
James "Jamie" Jaworski (Ethan Smith) is a 29-year-old hotel valet with a taste for
sexual sadism and
snuff films. He recorded his rape and murder of Jane Saunders, mother of two small boys, and posted it on the Internet. Jaworski had been formerly arrested but escaped justice due to a faulty search warrant. Dexter, whilst stalking him, noticed a red devil tattoo on his arm and identified him from it in the video on the fetish website. In order to capture him, Dexter lures him with a photo of his latest kill and then sticks a syringe in his neck. When questioned, Jaworski coldly admits that he raped and killed Jane Saunders, and he is not sorry. Dexter kills him at a deserted construction site where Jaworski had been stealing copper pipes to earn extra cash. He is Dexter's second victim on the show. In
Darkly Dreaming Dexter, Jaworski works as a janitor who abducts young girls. Frustrated by the Tamiami Slasher case, Dexter kills him very sloppily, even forgetting to take a blood sample from him. The Slasher kills his next victim in a similarly messy way as a form of
satire. •
Jane Saunders (Neeona Neel) was a mother of two boys. She was raped and killed in a snuff film by Jamie Jaworski. Her children were emotionally devastated after her death, and Dexter avenged her by killing her murderer. •
Carlos Guerrero (
Rudolf Martin) is a powerful drug lord responsible for the death of Officer
Ricky Simmons and Simmons' wife Kara. Dexter at one point thinks about killing him but decides Guerrero he did not fit the code, and he had just chosen to live in a dangerous world. Sergeant Doakes becomes Guerrero's main target, after accusing him of murder in front of his church and daughter Rose. In an act of retaliation, Guerrero has men tail Doakes in several attempts to scare him off. Guerrero eventually kidnaps Doakes and is ready to execute him when Guerrero is shot by several officers, including Kara's brother Detective McNamara (portrayed by
Scott William Winters). It becomes clear that Doakes' colleagues had used him as bait to get to Guerrero—thus getting the evidence they needed to finally having the drug lord convicted. •
Norberto Cervantes (Cristos) was a professional hitman and assassin working for Carlos Guerrero. Norberto was dispatched to kill Officer Ricky Simmons when Carlos discovered Simmons was an undercover cop trying to infiltrate his organization. Norberto did so by throwing him off a freeway overpass, but not before Ricky bites and takes a chunk of flesh out of Norberto's arm. Norberto then checked Ricky's phone, and discovered he had been in constant contact with his wife, Kara, and to prevent information leaking to the police, Norberto went to the Simmons residence, and shot Kara in the back and departed, but not before his bleeding arm left a drop of blood at the scene. When Kara succumbed to her injuries in hospital, her secret lover, Doakes, was driven to investigate harder and soon discovered the DNA trail and arrested Norberto. LaGuerta offered Norberto a more lenient sentence in exchange for providing enough evidence to bring down Guerrero, and he seriously considered this, but somehow Guerrero knew, and arranged for another one of his assassins, a paid off prison guard, to bring Norberto to the prison's showers, where he stabs Norberto to death. The death was blamed on an unnamed prisoner. •
Kara Simmons (Maureen Moldoon) was the wife of Ricky Simmons. Evidently, she became unhappy with her relationship with Ricky and became unfaithful to him by sleeping with Sergeant James Doakes. After her husband was shot for working undercover, Carlos Guerrero sent a man, Norberto Cervantes, to their house and shot her in the stomach, she tried to call her husband during the attack. Soon after, María LaGuerta and James Doakes arrive on the scene to find her gutshot. James Doakes becomes very concerned with her recovery and stays by her side while she is in hospital, to the suspicion of LaGuerta, who later confronts him with her theory that he is sleeping with her, to which he admits that he was. Doakes is shown to be very upset and vengeful regarding Kara's death. •
Matthew "Matt" Chambers (
Sam Trammell), also known as Matt Brewster and Matt Rasmussen, is a 35-year-old alcoholic. Dexter first learns of him in court by noticing the crying family of his latest victim, Alexander Pryce (18). Chambers uses his AA sponsor to vouch for his false recovery and he is found not guilty due to a mask of emotions that instill empathy and sympathy from people, where only Dexter could see his emotions were completely fake. Matt is a repeat drunk driver, who has killed and crippled several people, yet shows no remorse or guilt for his crimes, the people he has killed and severely injured while driving drunk, and the horrible way his actions effected all those who loved his victims. Whenever he kills or injures someone in a drunk driving, he changes his name and moves to a new city. Dexter kills him in an abandoned liquor store.{{cite episode •
Sean (
Richard Gunn) is a mechanic and temporary boyfriend of Debra's. Dexter and Rita double dated with them and Debra got on well with him, but later he turned out to be married and after Debra found out that he was using her as a bit on the side, she dumped him. He plays a part in making Dexter's relationship with Rita uncomfortable as she notes that they get on well with each other and that she and Dexter do not have the same fluency in their relationship. •
Shanda (
Lizette Carrión) became friends with Debra during Deb's undercover work as a prostitute. Shanda, being a street prostitute herself, became a helpful resource in the Miami Metro PD's hunt for the Ice Truck Killer. •
Jeremy Downs (
Mark L. Young) is a 19-year-old boy living in a
halfway house after he is released from juvenile hall. At the age of fifteen, he was convicted for killing another boy. Dexter attempts to kill him, but lets him go after finding out that his victim raped him. Before leaving, he encourages Jeremy to only kill those who deserve to die.{{cite episode •
Nurse Mary (
Denise Crosby in
Dexter,
Tanya Clarke in
Original Sin) is Dexter's first victim, as seen in a flashback. She is a nurse who overmedicates her patients with
morphine who will eventually die from overdose. Dexter incapacitates her with a syringe, which is where he obtains his syringe technique. She believes that she is helping her victims by "ending their pain", and keeps an album containing their
obituaries. Harry Morgan almost becomes one of her victims when he has a heart attack and is placed in her care. Harry gives Dexter 'permission' to kill her and he ambushes her at her house. Her victims were Phoebe Burns, Jason Kheel, David Nammers among others. Dexter gives her the nickname "First Nurse" in the series, although in the novels her nickname is "Last Nurse". In the novels, the nurse is basically the same as in the TV series. However, her motivation for killing her patients is never given in the novels. She is speculated to have been inspired by prolific serial killer
Harold Shipman. •
Anthony "Tony" Tucci (
Brad William Henke) is a security guard in an ice skating rink. LaGuerta initially thinks that Tucci is the Ice Truck Killer, and puts out a
warrant for his arrest —one quickly rescinded when the real killer kidnaps him. The killer amputates Tucci's left arm and right leg, Dexter realising that Tucci is still alive based on the blood flow in the severed limbs being unaltered- and leaves them as clues for Dexter to find, choosing locations that Dexter visited with Harry based on photographs in one of his albums. The killer eventually leaves Tucci in an abandoned hospital for Dexter to find, as a sort of invitation to kill him. He fails to meet Dexter's code, however, and Dexter sends Debra an anonymous tip leading her to the hospital and Tucci. Because of LaGuerta's rash decision to brand him as the Ice Truck Killer, this (along with a few other rash decisions) led her to be demoted. •
Mrs. Tucci (
Gina Hecht) is Tony Tucci's mother. She is inconvenienced by Lieutenant María LaGuerta's false accusation of her son, followed by learning of his kidnapping. María was forced to apologize to her by Captain Matthews, but she was thankful rather than displeased that she came in person. Throughout the time her son was kidnapped, she prayed almost non-stop and towards the end of
the episode reminded María of her faith. •
Nina Batista (
Angela Alvarado Rosa) is Angel's ex-wife. The couple separated some months prior to the series premiere, following Angel having an affair with another woman. Despite Angel's attempts to get Nina back, she constantly turned him down. However, as seen following Angel's nearly fatal confrontation with the Ice Truck Killer, Nina still cared a lot for her former spouse. Even so, neither Nina, nor the couples' daughter Auri, has been seen or referred to following the end of the first season. •
Neil Perry (
Sam Witwer) is a brilliant but deeply disturbed computer analyst with a compulsion to kill animals. Neil was regularly abused by his mother, but never struck back; only when she died of a heart attack did he finally lash out, mutilate and bury her corpse outside his trailer home. Neil began to see the chance for fame during the Ice Truck Killer case, using his own skills to
hack into the police database and read the newspapers. Eventually, he set himself up as the killer, kidnapping a prostitute in a fake attempt to kill her, possessing photographs of the corpses not released to the public, allowing his mother's corpse to be discovered, and readily confessing to the murders. While in prison awaiting trial, Dexter, who had been contacted by the true Ice Truck Killer earlier, realized Neil was a fraud when Neil failed to recognize him. Despite Dexter and LaGuerta's insistence, Captain Matthews refused to acknowledge the possibility that they may have the wrong man, and publicly announces Neil's identity as the Ice Truck Killer. Dexter's subtle manipulation eventually drives LaGuerta into investigating Neil's innocence, and she soon realizes that he found the information in the database, though the Captain and District Attorney continue to refuse to release him. LaGuerta appears to deliberately fail to convince the Captain of Perry's innocence as a scheme to undermine him. Later on, the Ice Truck Killer pours the collected blood of several of his victims in a hotel room. Shortly after its discovery, the blood is matched to the drained victims by
DNA, proving Neil's innocence to the police and leading to his release. LaGuerta undermining the Captain by publicly stating Neil's innocence behind his back was the final straw that caused her to be demoted. •
Jorge and
Valerie Castillo (
José Zúñiga and Valerie Dillman) were a husband-and-wife team of
human traffickers (though only one of them was officially known about) who would transport illegal immigrants from Cuba. If an immigrant could not pay an additional fee, he or she was locked up in Jorge's auto yard, taken out on Jorge's boat and drowned. Dexter kills them both, but not before getting relationship advice out of them.{{cite episode •
Oscar (Cesar Flores) is a Cuban child immigrant who is found inside the trunk of a car in Jorge and Valerie Castillo' autoyard. He witnesses Dexter injecting his captors and taking them away from the keyhole in the car. After this, he develops attachment issues, trusting only María LaGuerta, who in turn develops maternal feelings for him. When asked to describe the killer by a sketch artist for a
facial composite, he describes a man with facial features similar to
Jesus Christ, thus saving Dexter from being caught. He is then put in his uncle's care. •
Cindy Landon (Julie Dolan) is a black widow who appears in a flashback. Her only line is "I'll fuck you if you let me go." She was the focus of an episode of
Dexter: Early Cuts. She was a freelance magician's assistant who married men and killed them for their money. •
Eugene "Gene" Marshall (
Benton Jennings) is an
arsonist, who ironically was a fire inspector, who appears in a flashback. Dexter places candles around him before cutting him up. His only line is "Have you ever watched someone burn alive?". Marshall was a real-estate developer and millionaire who set one of his own apartment complexes on fire, killing seven people. His psychiatrist deemed him mentally unfit to stand trial. After three months in a psychiatric institution, Marshall was released and went back to his usual life of luxury. Dexter killed Marshall in June 1993. Dexter surrounds him with candles when he straps him to the table. •
Alexander "Alex" Timmons (Demetrius Grosse) is a sniper who appears in a flashback. His only line is "Yes, I did it. Is that what you want to hear?" His death appeared in the animated webisode series "Dexter: Early Cuts" where it was shown that he was the first of Dexter's kills from which a blood-slide trophy was taken. Timmons had been a hunter since he was young, developing a fondness for killing. He later became a U.S. Marine Corps sniper, allowing him to kill in the open while masking it as warfighting. Eventually, his impulse to kill overcame him and he shot and killed three civilian children and received little punishment for it, only being discharged from the Corps. Dexter first approached him at a gun range which Timmons often practiced at. He then pretended that his car had broken down and asked Timmons for assistance. While he was distracted, Dexter sedated him, abducted him and killed him in his home with a Marine Corps combat knife. Before his death Alex admitted that he had committed the crimes which brought him there. •
Emmett Meridian (
Tony Goldwyn) is a
psychotherapist who, as Dexter figures out, targets powerful and successful women and has encouraged at least three of his female clients to commit
suicide. Dexter stalks him by taking therapy sessions under the guise of Sean Ellis and, to Dexter's surprise, ends up making a psychological breakthrough with him. Emmett puts Dexter into a state of calm and helps him to remember his dark past, seeing a boy in blood but initially not understanding the meaning. This allows him to let his guard down and helps his relationship with Rita. Dexter also manages a major
catharsis by telling Meridian about his murders before killing him. He sees a camera recording in his office and breaks in at night to find the files on Meridian's computer. His M.O. is that he will put his victims on anti-depressants and eventually abruptly stop writing prescriptions, preventing the patients' brains to have time to adjust to the rapid change. His victims were Meghan Dowd, Carolyn Jillian, and Vanessa Gayle.{{cite episode •
Robert "Bob" Hicks (Scott Atkinson) was Paul Bennett's sponsor from
Narcotics Anonymous for his recovery from drug abuse. Bob came around Rita's house to plead that Paul was innocent and that there had been a mistake. He was there to tell her that Paul had been clean for over a month and that it was unlikely that he committed the crime. Rita politely but firmly tells him to mind his own business and he is not seen again.
Minor characters in season 2 •
Alfonso "Little Chino" Concepcion (
Matthew Willig) alias (
Chino Gonzales) is an enormous, powerful, and dangerous, yet surprisingly cunning and intelligent, member of the 29th Street Kings gang, serving as an enforcer. Chino, despite his nickname, is extremely tall and well-built (his mugshot photo indicates he is just short of 6 foot, 9 inches) and used a
machete to kill any witnesses of his gang's crimes; and for every kill he makes, he has a teardrop of blood tattooed on his arm. Dexter targeted Chino for death after he personally killed a man and arranged the death of the man's mother (the only witness), thus leaving the woman's daughter psychologically scarred—just like Dexter. While still reeling from the death of his brother, Dexter finally pulled it together after his initial failure to kill Chino, and later after a failed ambush by Chino. When the gang was betrayed and arrested, Chino escaped to hunt down the young boy who sold out his gang, but Dexter intercepted and captured him. Dexter later killed Chino, making him the first victim of Season 2. •
James "Jimmy" Sensio (
Glenn Plummer) is a blind
Voodoo high priest nicknamed "the man with God in his mouth". He can be hired to perform "death curses" by selling his targets drinks poisoned with
ricin. He pretends to be possessed by a spirit and curses Dexter who tells him to knock if off. After weeks of being stalked by Doakes, Dexter's murderous urges have become unbearable. However, he is for some reason reluctant to kill Jimmy and lets him go. Jimmy quickly leaves town, alive and well, never to be seen again.{{cite episode •
Roger Hicks (
Don McManus) is a car salesman who targets and murders brunette women. He uses credit checks to obtain information on his victims, ensuring that they are single, have no pets, and live in a place where neighbors are at a distance. When researching Hicks for his next kill, Dexter ends up buying a new minivan from Hicks. This ends up working to Dexter's advantage when he realizes it is an ideal vehicle to aid him in his killings. Dexter manages to match Hicks' DNA with
semen found at a crime scene. When Dexter tells him about his relationship problems with Rita, he seems to empathize and rants on his hatred of women. An enraged Dexter quickly stabs him in his chest after Hicks calls Rita a
cunt. Dexter also compliments Hicks on his talent for lying as he is able to change his story on a whim.{{cite episode •
Curtis Barnes (
John Marshall Jones) is a former
U.S. Army Ranger who served several tours of duty in the
Gulf War. Curtis experienced, did, and saw many terrible things during his time in the armed forces, leaving him emotionally scarred. Settling down in Miami with his
Vietnamese wife Alisha, Barnes' problems never leave him; he repeatedly wakes up screaming and punches holes in the walls of his home. Alisha repeatedly tells him to get help, and arranges for him to see a psychiatrist, but Barnes never goes, believing no one can help him. Alisha eventually could not take it anymore and declared to Barnes she was leaving him. In response, Barnes shoots Alisha twice through the heart, and once again through the head, all with his arm remaining steady and in the space of a split-second. Barnes flees for his life, and the police begin hunting him for his wife's murder. Somehow, Barnes learns that James Doakes, who also served as an Army Ranger, is leading the investigation, and arranges with his friends in the military to lead Doakes to him on his boat. Doakes goes with no support, as he was informed the man he was meeting was a member of Barnes' unit, rather than Barnes himself. Doakes sympathizes with Barnes, as he shares his emotional problems, and Barnes tries to convince Doakes to stall the investigation long enough for him to arrange passage to Cuba. Doakes, however, tells Barnes that turning himself in is a better way to deal with his pain. Barnes refuses to surrender, and raises his gun, forcing Doakes to kill him. •
Santos Jimenez (
Tony Amendola) One of the three men present at the murder of Dexter's mother, Laura Moser. Jimenez was able to cut a deal with police and he was included in the witness protection program. In his old age, he was running a tavern in
Naples, Florida, while at the same time he continued to sell cocaine. Dexter tracks him down and finds that he is a bartender, he waits for him and beats him and attempts to kill him but in a moment of confusion, Lila is able to convince him to stop. Later, in an attempt to bring Dexter and her back together, Lila gives Jimenez the address of the bowling alley Dexter will be leaving. Waiting outside his truck, Jimenez slashes Dexter's arm with a knife and escapes. After Lila's influence nearly gets him exposed as a killer, Dexter abandons what she taught him and kills Jimenez with a
chainsaw, the same weapon used to kill Laura Moser. Afterwards, Dexter was forced to leave his body at the cabin because he had to go to Rita since Lila had broken into her home. Dexter went to Jimenez's cabin at night and attempted to dispose of his body. Later, Jose Garza came looking for Jimenez, because he wanted to get his cocaine, but was caught by Dexter and killed at the cabin. Since Santos killed Laura Moser, he was responsible for Dexter turning into a serial killer despite that Dexter usually only kills dangerous criminals who commit murder. •
Kenneth "Ken" Olson (
Silas Weir Mitchell) is a wannabe
vigilante inspired by the Bay Harbor Butcher. He has successfully killed two criminals. One was a drug dealer he ran down with his car (Olson stole his drugs afterward). The other was an abusive husband whose anger was provoked when Olson slept with his wife, who was pushed down a flight of stairs. His third attempted victim, a robber who hurt Olson's mother, escaped by stretching out the rope Olson used. Dexter originally planned to stop Olson without killing him. Upon learning of Olson's first two victims, Dexter decides that Olson must be killed. Dexter did not obtain a blood sample from Olson. He left his dismembered remains inside a train car to send a message. Under Lila's influence, Dexter said he "had" to kill Olson (out of necessity) but did not "need" (feel the urge) to kill him.{{cite episode •
Juan Ryness is a pimp who murdered one of his
prostitutes; he was Dexter's fourth human victim. He is arrested, but let off due to a faulty warrant. When Tom Matthews visits Harry Morgan during Debra's birthday party to inform him of Ryness's release, Harry loses his temper and later tells Dexter that he was right in training him. However, Dexter finds and kills Ryness himself; Harry finds his son standing over Ryness's dismembered body. Dexter later learns that Harry committed
suicide days later, rather than dying of natural causes as he had previously believed, and guesses that he was unable to face the reality of what he trained his son to do.{{cite episode •
Jose Garza, or "Christopher Harlow", is a murderer and drug trafficker connected to Santos Jimenez. Initially supposed to make a deal with Jimenez for Garza to buy a quantity of cocaine, he was surprised and angered when Jimenez did not show up, and texted Jimenez's cell phone. By this point, Jimenez had been killed by Dexter, and the cell phone was in Dexter's possession. When Garza announced he knew where Jimenez's cabin was, where Dexter was holding Doakes captive, Dexter, knowing about Garza's crimes, saw a way to get rid of him: by killing him. Luring Garza into an ambush outside of Jimenez's bar, Dexter sedated and brought him back to the cabin and killed him in front of a horrified Doakes with a hand saw. Later, after the cabin is destroyed by Lila, Garza's brutally dismembered body parts are found as well as that of Doakes himself; which the task force considers conclusive evidence that Doakes was the Bay Harbor Butcher. •
Esteban and
Teo Famosa (Gilbert Saldivar and Wilmer Calderon) were Cuban brothers and drug dealers who, after finding James Doakes in the
Everglades, knocked him unconscious and brought him back to the cabin where Santos Jimenez had planned to sell them
cocaine.
Dexter, while protecting himself, also saves Doakes by killing them both, he snaps Esteban's neck and then shoots Teo in the chest.
Minor characters in season 3 •
Calvin "Cal" Rooney (Joel Weiss) is the first victim of Dexter seen in season 3. No background story was given as Dexter was telling his
dentist that he "had fun at a carnival" and "won a prize". It also reveals that he has at least one-eighth of his new blood-slide box filled, showing there were many more off-screen. •
Oscar Prado (Nick Hermz) is the first victim of Dexter's that does not follow "Harry's Code". While attempting to seize "Freebo", Dexter is caught by Oscar and mistakes him for a junkie looking for drugs. Oscar attacks him and Dexter, in self-defense, grabs a
bayonet from Oscar and stabs him in the chest, severing his aorta and killing him almost instantly. Dexter expresses discomfort after killing him, especially after learning he worked with at-risk youth and that, for the most part, despite his drug use (which Debra discovered he bought from Freebo) and a few traffic tickets, he had not harmed anyone. He is the brother of ADA Miguel Prado, who is distraught over the loss of his brother. Because of that Dexter attended the funeral. •
Frederick "Freebo" Bowman (
Mike Erwin) was a drug dealer who has murdered two college girls. Dexter's initial try at killing him did not go as planned. When Dexter goes to Freebo's house, he expects to take him to a nearby house and kill him, but is instead attacked by Oscar Prado. The police believe that Freebo is the killer of Oscar Prado. Thus, Freebo becomes the prime target of police officers throughout the city. Dexter eventually finds and kills Freebo; but, at the scene of the crime, Miguel Prado finds Dexter with the killing tool. Dexter tells Prado it was self-defense, but Prado admits to Dexter he was going to kill Freebo himself. Meanwhile, the police search for Freebo is stymied when people associated with him are killed. •
Teegan Campbell (Jelly Howie) was the drug-addicted girlfriend of Freebo. Dexter witnesses a falling out between Freebo and Teegan before he initially goes to kill Freebo. When Teegan is found dead with a piece of skin cut off, she is considered a Jane Doe, but Dexter recognizes her. Teegan is assumed by Debra to be a "strawberry", a rich college girl who pays for drugs with sex. This helps Dexter locate her apartment where he surprisingly finds Freebo hiding out. After killing Freebo, Dexter surreptitiously feeds clues to Debra that lead her to Teegan's identity and her link to Freebo. Debra, and initially Dexter, assumes that Freebo is Teegan's killer, though in reality she was actually killed by George Washington King, aka The Skinner. •
Wendell Owens (Marc John Jefferies) is a 15-year-old boy who once served as the doorman for Freebo. Debra finds him and questions him, in the process establishing a friendly relationship with the boy. A short time later, when Owens is found to be the latest victim of the Skinner who unlike the previous victims died from the skinning process and not strangulation, Debra takes it personally. His murder leads Debra to the conclusion that the Skinner is tracking the investigation and using her leads to find Freebo. •
Javier Garza (
Ray Santiago) is a pimp who Debra pressures information out of about Freebo. Javier is soon found dead with his skin peeled off, and it is assumed that Freebo killed him. However, Dexter killed Freebo before Javier died, and the police eventually figure out that Freebo is not likely to have killed Javier or Teegan. It was later revealed Javier was killed by The Skinner. •
Mario Estorga (Jerry Zatarain) was a tree trimmer and illegal Nicaraguan immigrant. He had a family but would rather get deported than divulge any information on The Skinner. But when
Debra puts trimmed trees in his driveway to make him think that the Skinner had come to his house, he tells them that he has a storage unit under a highway. •
Nathan Marten (Jason Kaufman) is a
pedophile who approaches Astor while Dexter, Rita, and the kids were shopping at a grocery store. Later, while at the beach, Dexter sees Marten taking pictures of Astor. While initially hesitant to kill Marten because he does not satisfy "The Code of Harry" (he is not a killer), Dexter
strangles him after it becomes apparent that Marten will eventually try to
rape Astor. Possibly because he is not a murderer, Dexter does not take (or is at least not shown taking) a blood slide sample from him. •
Ethan Turner (
Larry Sullivan) married wealthy women, killed them, and took their money and assets. Ethan has killed at least two wives. Miguel Prado tried to prosecute him, but could not, supposedly due to lack of evidence. Miguel brought his frustrations about the case to Dexter's attention, who investigated as well and decided to seek out Ethan in
Bimini. Upon boarding the same cruise ship Ethan was on, he trapped Ethan in his room, killed, and dismembered him, then got off the ship. Miguel's office later received a fax reporting that Ethan had been reported missing, and, having been told by the Coast Guard, Dexter was not where he said he was "fishing", knew immediately that Dexter had killed Ethan. Miguel confronted Dexter about this, and revealed he had deliberately mentioned Ethan to Dexter in the hope he would avenge Ethan's victims, who the justice system had failed. Having seized this opportunity, Miguel expressed his admiration and respect for Dexter for achieving through vigilantism what he had failed to do legally. •
Clemson Galt (
Blake Gibbons) is a
neo-Nazi who murdered his girlfriend for getting pregnant, as well as the family of an "
Aryan defector". He was found not guilty of the killings after his associates frightened or killed all witnesses. However, he was found guilty for an unrelated
armed robbery and was sentenced to 15 years in a maximum security prison. Dexter suggests Galt to Miguel Prado as a target, intending to scare Prado off by showing the difficulty and risk of such a project. To Dexter's surprise, Prado brings Galt to a Miami courthouse as an expert witness and releases him. Dexter, posing as a fellow neo-Nazi, picks him up only to capture him, and kill him. Dexter says that Galt had been on his "Top Ten" list of people to kill for years, but he never got the opportunity to do it, although this could just be a lie in order to sell Miguel Prado onto the idea. •
Albert Chung pushed an old woman down the stairs and escaped prosecution with the help of Ellen Wolf. Afterwards, he breaks into a house and, being discovered by a young college student named Lisa Morton, kills her and flees. He is identified by Vince Masuka because he left bloody sock prints at the crime scene, something he had done numerous times before. Wolf tries to get his charges lessened as well as several other benefits. However, she later helps turn him in to the police. Masuka shows hatred towards him as he states that "he gives Asians a bad name", even more so when Dexter observes that Masuka and Chung look strikingly similar. •
William "Billy" Fleeter (
Jeff Chase) is an ex-football player who gave up sports for gambling. Running up serious debts, he pays them off by helping his
bookie kill others who cannot pay their debts. Dexter uses Fleeter to help train Miguel Prado in his trade. He shows Miguel how to research his victims to be sure they deserve to be killed (or meet the "Code of Harry" in Dexter's case). He also reveals to Miguel how to stalk and subdue his victims, as well as how to kill them and not leave any traces behind. However, he says the best place to hide a body is in an open grave in a cemetery, and does not mention using his boat. Fleeter is killed by Miguel Prado in an old casino storage room. •
Toby Edwards (
Vincent Pagano) was a bartender who Ellen Wolf hit on when she went into his bar, he flirted back and later that day calls her several times and goes around her house. She does not answer because she has been killed by Miguel Prado. Toby is later taken in for questioning and was Lt. LaGuerta's prime suspect and she vented some of her emotions on to him, but Quinn finds an alibi for him and Toby tips her off that he saw an
SUV at the time he was there. This leads to María suspecting Miguel of Ellen Wolf's death. •
Tammy Okama (Jane McLean) is the party organizer, hired by Dexter's co-workers to organize his bachelor party. After the party she and Masuka spend the night together. Her sense of humor resembles Masuka's, and she attends Dexter's and Rita's wedding as his date. Even so, she has not been seen or mentioned since the season three finale, where she and Masuka dance at the wedding reception.
Minor characters in season 4 •
Martin "Marty" (Alexander Lewis) runs a food truck that the police department frequent for coffee and sandwiches. •
Benito Gomez (Gino Aquino) was a former boxer who has beaten two people to death, to the point of disfiguration. A fatigued Dexter is set to testify his forensic evidence at Gomez's trial, but he brings the wrong evidence, leading to Gomez being freed. As a result, Joey Quinn was very upset with Dexter. Dexter later catches and kills Gomez in an abandoned boxing ring. He is the first victim in season 4. It initially appears as though Dexter crashes his car with Gomez' body parts in the trunk; but it is later revealed that Dexter stored Gomez' body parts in the boxing ring where he killed Gomez. •
Zoey Kruger (
Christina Cox) was a policewoman who shot and killed her husband and daughter, and hid the crime by killing the suspect. Kruger finds out that Dexter is stalking her but is initially suspicious that his motive is to re-open her murder case. She explains how family life forced her to kill her family. Dexter notices the similarity between them, but realizes he would rather get caught than kill his family. He also realizes (to his own surprise) that he does not want to lose his family. He then kills her. • High school sweethearts
Nikki Wald (
Alicia Lagano) and
Jonathan "Johnny" Rose are a pair of robbers who target tourists and shoot those who are uncooperative. When LaGuerta and Batista approach the suspects house for questioning, the Vacation Murderers shoot at them. In the fourth episode of the season, being suspected of gunning down Detective Debra Morgan and former FBI Special Agent Frank Lundy (actually committed by Christine Hill), Sergeant Angel Batista decides to reveal to the press that one of the killers, named Johnny Rose, has
syphilis and has numerous partners. Within hours, the news is spread around Miami. This revelation of information was designed to create dissension between the Vacation Murderers, thus making them easier to catch. Johnny Rose was gunned down by his female partner in crime, being shot three times in the chest. She was shortly found in the street, gun in hand, high on meth, having a nervous breakdown. She was tasered by Detective Joey Quinn, and taken into custody. Wald confessed to the vacation murders and robberies but insisted she did not kill Lundy or shoot Debra. •
Jonathan Farrow (
Greg Ellis) is a contemporary artist and photographer who enjoyed having his subjects slightly beaten and cut, creating violent photos that disturbed even Dexter. He was also accused of a rape seven years before but the charges were dropped when the victim recanted; however, the lead detective believed she was paid off. When an arm of one of his models is found in an alligator, Farrow becomes the prime suspect of her murder and several others. Despite Harry's demands that he focus on Trinity, Dexter considers Farrow a potential victim. After Farrow suggests photographing Debra like his models, Dexter immediately decides to kill him. After finding blood and a fingernail of the dead model at his studio, Dexter sets out to find him at a club, only for Quinn to interfere. After camping with Cody the next night, Dexter instead heads to Farrow's house and kills him in typical style, albeit using Farrow's equipment for a much more dramatic kill room. Even while strapped down, Farrow maintains his innocence, defending his work as a contrast of beauty and violence. The next morning, to Dexter's shock, Farrow's assistant Timothy Brand (portrayed by John Griffin) is arrested for the murders on airtight evidence. This revelation left "Harry" greatly disappointed in Dexter and Dexter feeling what could only be described as guilt for killing the wrong person. Farrow was innocent and is the fifth person Dexter has killed that did not fit the Code of Harry in not being vetted as killers (the others were Camilla, Marten, Famosa brothers), though unlike the previous four, Dexter was entirely sure that Farrow was the killer at the time. •
Valerie Hodges (
Mary Mara) was one of Harry Morgan's many lovers. She had a romantic relationship with Harry before he left her for Doris Morgan.
Debra tracks her down and asks her about Harry. She initially does not remember much but later remembers the address of one of his lovers, which turns out to be Laura Moser's old house, which leads to Debra discovering
Dexter's brother was the Ice Truck Killer and that he witnessed his mother's death. •
Scott Smith (
Jake Short) is a boy kidnapped from his babysitter at a mall by Arthur Mitchell. His father, Nick (portrayed by Roger Ranney) arranges a manhunt. He was rescued by Dexter before Arthur got to kill him. Later during Debra's interview with Scott, his experience helped the police to identify Arthur as the Trinity Killer. •
Stanley "Stan" Beaudry (Ian Patrick Williams) is a trucker who allegedly murdered a prostitute, but was never arrested due to contamination of the chain of evidence of the alleged murder weapon by the police. Dexter sets him up to be the primary suspect for the Trinity killer as Miami PD is closing in, and then kills him in his truck. This kill was done very hastily on scant evidence, lacking even the picture of Beaudry's victim, which Dexter acknowledges. Later, the police track the movements of Beaudry from city to city on his truck routes and find the Trinity Killer's post cards to his daughter, Christine. This clears Beaudry as being the Trinity Killer after finding he has rock solid alibis, including that he was hundreds of miles from the scene of some of the Trinity Killings at the time of the murders. They determined correctly that the
DNA, murder weapon, and Lundy's files were planted, but attributed this to the real Trinity Killer (the evidence was actually planted by Dexter).
Minor characters in season 5 •
Raymond "Ray" Walker (
Adam John Harrington) is an FBI agent investigating Rita's death and its ties to the Trinity killer. Quinn asks him where the safe-house from the Mitchell family is, to ask them some questions about Kyle Butler. •
Rankin (Brad Carter) is Dexter's first kill following Rita's death. It was not, however, a murder by Harry's code, but rather an act of rage. Dexter, roaming the Miami outskirts, meets him at fuel dock store, and — as Rankin taunts Dexter's dead wife — Dexter responds by beating him to death. When done, thoughts of Harry appear, saying that the slaughter was the first human thing he had seen Dexter do since Rita's death. It is Dexter's third known inadvertent killing. • The
Barrel Girl Gang, a raping/killing circle folds out as the main target of Dexter for Season 5. The circle is responsible for kidnapping, raping and killing twelve women; Lumen was intended to be their thirteenth victim. Their victims were initially held captive in the campgrounds where they raped their first victim, and later in the attic of Boyd Fowler. Famous author and motivational speaker
Jordan Chase is revealed to be the driving force of the circle, which consists of him and his childhood friends. All five men appear in a photo, taken by their first rape victim, Emily Birch. As members of the circle begin to disappear, Debra deduces that their latest victim escaped and is exacting her vengeance, with the possible help of a man who loves her. While Debra eventually arrives to the camp, she finds the vigilante couple (in reality, Dexter and Lumen, hidden behind opaque plastic sheeting and therefore, unseen to her), she spares them and advises them to disappear before the police arrive. •
Boyd Fowler (
Shawn Hatosy) works in
roadkill pick-up. Dexter first targets him as he spots blood in of the van he used to move out of his and Rita's home. Fowler serves as the circle's "finisher", i.e. the one responsible for finally killing and dumping their victims. His M.O. is to electrocute them, putting their bodies in an oil drum filled with
formaldehyde, and dumping the drums in a Florida marsh. Since Boyd tranquilized Dexter in his initial attempt to kill him, Dexter kills Boyd in his home, only to realize he had been watched by the circle's last victim, Lumen, whom Boyd had yet to finish off. Boyd kept locks of hair as trophies of his victims. However, as he only took them once he killed the women, there are only 12 of these. This, plus Cole having thirteen DVDs, leads Debra to conclude that a victim of the circle escaped, and is killing the members. •
Daniel "Dan" Mendell (
Sean O'Bryan) is a dentist (and called "Dan the Dentist" by Dexter, Lumen, and Debra), and the first of circle to be tracked down by Lumen after Boyd's death. She attempts to kill him by shooting him, but only manages to wound him. Not able to handle the situation herself, she calls Dexter, who initially does not believe that Mendell is in fact one of her abusers, due to the fact she only recognized his smell. However, Dexter is proven wrong when Mendell manages to phone his friends, warning them that Lumen is alive. Dexter responds by snapping Mendell's neck. He was a married man, able to keep his wife in the dark of his activities by claiming he and his friends (whom she had never met) were going on a week-long fishing trip. •
Cole Harmon (
Chris Vance) is Jordan Chase's head of security, as well as a part of the circle. Lumen refers to him as "Suit and Tie", since he had a habit of folding his coat and placing it on a chair before he would rape her, as well as the only rapist to remove her blindfold, as he was sure the woman would be killed. He also tortured her, leaving scars on her back. He encounters Lumen in a hotel during the seminar and nearly kills her, before Dexter subdues him. He is then killed by Dexter, with Lumen as a witness. Before Dexter killed him he asked for the names of the others, but Cole refused to say. His death does, however, lead to a conversation between Chase and Dexter, in which Dexter realizes that Chase is one of the men who did this. Cole kept videos of the circle torturing and raping their victims as trophies. •
Alexander "Alex" Tilden (
Scott Grimes) is a bank employee who saved a piece of jewelry from each of his victims. He is the last of the circle to be tracked down by Dexter and Lumen, identified to them by Emily Birch. In an attempt to save himself, Alex states that the real blame lies with Jordan Chase, claiming that he was the one who made them assault the women, that Chase made him do things he never would have done, enraging Lumen who tells him that they made her do things she never would have done. He then claims that he can give them Chase, only to be rebuffed by Dexter. In a final attempt to stay alive, he offers them money, all they have to do is give him a number. Lumen coldly replies "Thirteen" a reference to her DVD number, and how all she was to them was their thirteenth victim. He is then killed by Lumen, per the code of Harry. •
James "Jim" McCord (
Raphael Sbarge) works in Internal Affairs, and investigates Angel for a possible assault on a co-worker. While the investigation is dropped, Angel starts believing that McCord and LaGuerta are having an affair. He accidentally ruins an undercover operation of theirs, when he walks into a hotel room in which he assumes he will find them sleeping together. Both McCord and Maria are furious at him. • Brothers
Carlos and
Marco Fuentes (Joseph Julian Soria and Jose Aguirre) become the first proper suspects in the Santa Muerte murder investigation. Debra leads a storming of the Fuentes brother's apartment complex, and finds Carlos holding a teenage boy hostage with a machete—the same kind of weapon used in the Santa Muerte killings. Carlos escapes the building after slitting the boy's throat. The boy survives, but the Fuente brothers have gone off-grid. Thanks to a tip from an acquaintance of the Fuentes brother, the police track them down to a local dance club called Club Mayan. However, the arrest fails miserably, leaving Carlos and two additional people dead, and Marco on the run. •
Lance Robinson (
Chad Allen) is a man cruising the Internet for sexual encounters with other men, occasionally killing them as well. Hoping for it to be his first "normal" killing since Rita's death, Dexter drugs him. However, before he is able to finish Robinson off, he is interrupted by a phone call from Lumen, who has just shot Dan Mendell. While Dex is attending to Lumen and Mendell, Robinson regains consciousness and tries to escape. Dexter recaptures him, kills him, and manages to stage Robinson's and Mendell's deaths as a sexual encounter gone out of hand. •
Emily Birch (
Angela Bettis) was the first victim of Jordan Chase's circle. According to her story, she was victimized while she and her assailants were still teenagers, but was let to live and is still in a distant relationship with Chase. She was also the one to take the picture of the circle, after being raped. Controlled by Chase, she set up Lumen and Dexter for a trap. However, Chase kills her after she protests the killing of Lumen.
Minor characters in season 6 •
Lisa Marshall (
Molly Parker): Travis Marshall's caring older sister and an elementary school teacher. They have grown apart as Travis is not able to spend much time with her due to his killing as the "Doomsday Killer." His Doomsday persona eventually takes over and he kills Lisa for talking to the police. He then uses her body in the
Whore of Babylon tableau. •
Nicholas "Nick" (Germaine De Leon): one of Brother Sam's employees at the garage. Wanting to remain in the gang he was a part of prior to going to prison, he murders Brother Sam to prove which side of the law he is on. He is later confronted by Dexter, who intends to kill him against Brother Sam's wishes. Nick asks for forgiveness, stating he had no choice. However, Nick realizes that the police have no evidence to tie him to the killing and subsequently gloats about how he got away with it. Dexter, initially willing to let him go, then goes ahead and kills him. •
Nathan Roberts (
David Monahan): A jogger whom Travis Marshall kills and butchers to resemble the
Four Horsemen of the Apocalypse. •
Dr. Michelle Ross (
Rya Kihlstedt): a therapist who the police department assigns to Debra after she is involved in a shooting. During their sessions, Debra starts to believe that she is in love with Dexter. •
Professor Carissa Porter (
Mariana Klaveno): Professor Gellar's former assistant who provides Miami Metro with insight into their prime suspect in the "Doomsday Killers" case. Quinn has a brief affair with her. •
Holly Benson (Lacey Beeman): a would-be victim of the "Doomsday Killers" whom Travis released because he was questioning the morality of their acts. When Travis acknowledged that Gellar was no more than a figment of his imagination and hence completely responsible for the Doomsday Killings, he tracks down Benson and kills her to clean up "a mistake". •
Steven "Steve" and Elizabeth "Beth" Dorsey (
Kyle Davis and
Jordana Spiro): a fanatically religious couple who team up with Travis to kill Holly Benson. Dexter kills Steve, mistaking him for Travis. Beth is later dispatched to Miami Metro by Travis to release Wormwood as a poison gas. Dexter, realizing her plans, locks her in an interrogation room just as she releases the gas, making her its only victim.
Minor characters in season 7 •
Wayne Randall (Daniel Buran): A man who went on a killing spree but was imprisoned for life after his accomplice, Hannah McKay, agreed to help the police incriminate him. Randall agrees to help the police find bodies of his victims, though he soon commits suicide. Dexter suspects it was just a ploy to get a few more days of "sunshine and frosty swirl" (ice cream) before his death. •
Raymond "Ray" Speltzer (
Matt Gerald), was suspected of two murders, and whom Dexter believed would most likely kill again. Dexter investigated him further noting that he had access to a mausoleum at the cemetery where he worked. Dexter found proof of Speltzer's guilt inside it. Speltzer bought a girl home to his place and killed her as Debra broke in to confront him. Dexter saves Debra from Speltzer, who escaped. Speltzer removes the evidence from the Mausoleum, but is caught by local police. During Debra's interrogation, he cracks and admits that he murdered at least one of the girls. However, the arresting police officers failed to properly mirandize him, and Speltzer's lawyer uses this technicality to set him free. Dexter enters Speltzer's Motorhome to catch Speltzer off-guard, but he unexpectedly comes in and knocks Dexter out. Dexter awakes in a maze, like the previous one. He manages to fend off Speltzer and escape from the roof. Speltzer attends the burial of his last victim, which makes Debra lose control and she has to be restrained. Dexter finally catches Speltzer late at night at the cemetery and straps him to the cremation bench. He then burns him and his box of blood slices in the fire. •
Donna Randall (
Beth Grant): Wayne Randall's mother who brings further evidence of his crimes to the police after her son's death. •
Salvatore "Sal" Price (
Santiago Cabrera), was investigative writer who had written a book on the life story of Wayne Randall. He thought Hannah McKay might have been more involved in the killings than previously presumed, and wanted to write a sequel about her. To further his personal investigation into the subject, he approached the Miami Metro hoping to get access to the case files. He asks Debra for a date and later tells her about the differences in the blood reports submitted by Price's guy and Dexter. The next day, Price spotted Dexter dropping off Hannah at her home, and confronted Dexter in the street telling him he knows Dexter fudged the blood reports. Dexter managed to convince Price not to say anything in exchange for information on Wayne Randall. Price visited Hannah at work and pressured her to give an interview, by threatening to go public with her relationship with Dexter. She agreed to the interview on the condition that he keeps Dexter out of his book. Price interviewed Hannah, who admitted to stabbing the woman at the hotel. Later that night, Price went to Dexter's apartment to find out what he knows about Wayne Randall. Dexter confronts Price with his plan to frame him for murder unless he backs off, but Price collapses and dies, apparently from a heart attack (later revealed to have been poisoned by Hannah). •
Oleg Mickic (Karl Herlinger) was an ex-soldier, and one of the two assassins sent by the Koshka Brotherhood to eliminate Isaak. Mickic had worked for Isaak in the past, and when Isaak discovers that Mickic is being sent to kill him to see if Mickic has any loyalty to his former boss, but Mickic's mind was already made up. Mickic was a sniper who was accustomed to killing from a distance, and had a habit of buying his rifles locally. When Isaak recruited Dexter into helping him dispose of the brotherhood's hitmen, Dexter tracked Mickic to a firing range near the airport where Mickic was testing out his rifle. While Mickic was lying on his stomach for precision, Dexter came behind him and stabbed him through the torso, covering his mouth to muffle any screams. •
Benjamin Caffrey (
Sherman Augustus) was a hitman based in New York and one of the two assassins sent by the Koshka Brotherhood to eliminate Isaak. Caffrey killed all of his victims with from a close range with knives. Caffrey had worked for Isaak in the past, but had no qualms about killing his former boss. When Caffrey was unable to contact Mickic, as he had been killed by Dexter, Caffrey begins to follow Dexter, who Caffrey believed would lead him to Isaak. Caffrey begins trailing Dexter, who leads him to a cargo ship. There, Dexter and Caffrey face off, both wielding knives, but before either can make a move, Isaak appears from behind, shooting Caffrey with a silenced pistol. Dexter and Isaak then threw Caffrey's body overboard. •
Clinton "Clint" McKay (
Jim Beaver) was Hannah McKay's father. A convicted felon and gambler, he initially makes contact with Hannah to reconcile with her about his past behavior. Things turns nasty when Hannah refuses his request for $20,000 to open a business (actually, to pay off his gambling debts), using threats of exposing her for a past murder. He tries to extort money from Dexter as well, so Dexter kills him. Clint's death at the hands of Dexter was a violation of the Code of Harry as Clint had never killed anyone, though Dexter ignored this as he wanted to protect Hannah. Though Clint wasn't Dexter's first innocent victim, he was the first and only innocent victim that Dexter killed in his usual ritualistic fashion, though there were still differences: Clint was still dressed, Dexter killed him directly on the Slice of Life and he didn't dismember his corpse before he disposed of his body in the Gulf Stream. •
Joseph Jensen (Mike Foy) is the Phantom Arsonist. After killing seven people in two weeks, Dexter tracks him down when he runs his fingerprints through juvenile records. He initially planned to kill the arsonist himself but, instead, he hands him over to the police department anonymously. •
Philip "Phil" Bosso (Brett Rickaby) is an arson investigator, who Dexter suspected as the Phantom Arsonist. However, his selection of incendiaries turns out merely to be for Civil War reenactments. •
Arlene Schram (
Nicole LaLiberte): the only witness to Hannah McKay's crime of poisoning a camp counselor. She later helps Hannah escape from prison. •
Hector Estrada (
Nestor Serrano): a drug dealer and the leader of the three men who killed Dexter's mother, Laura Moser, for being a police informant. LaGuerta has him released from prison on parole in an attempt to trap Dexter, trying to prove he is a serial killer. Dexter eventually kills Estrada and Debra shoots LaGuerta. Dexter then makes it look like they both killed each other to prevent further police investigation into him.
Minor characters in season 8 •
Lyle Sussman (Scott Michael Morgan): A hunter who is murdered on tape by the Brain Surgeon. •
Ronald "Ron" Galuzzo (Andrew Elvis Miller): Vogel's former patient who Dexter suspects of being the Brain Surgeon. Dexter discovers that he is not the Brain Surgeon, but rather a
cannibalistic killer. •
Niki Walters (
Dora Madison Burge): Masuka's long-lost daughter whom he hires as a lab assistant. •
Cassie Jollenston (
Bethany Joy Lenz): Dexter's neighbor and Jamie's friend. Jamie attempts to set Dexter up with her, but it doesn't work out and she begins dating Oliver Saxon, who murders her. •
A.J. Yates (
Aaron McCusker): Vogel's former patient and a serial killer with a foot fetish. •
Maxwell "Max" Clayton (
Kenny Johnson): a
U.S. Marshal hired by Elway to track down Hannah McKay.
Recurring background characters at Miami Metro PD Alongside the main characters and supporting characters, there are some members of the Miami Metro Police Department that appear on recurring basis through the series, but only as background characters. While the actors receive proper credit for their appearances, they do not have any influence on the storyline, and mainly operate in the background, assisting the other characters. These characters include
Detective Angela "Angie" Miller (portrayed by Dana L. Wilson in the seventh and eighth seasons of the show),
Technician Karen (portrayed by Mary Alyce Kania during the first four seasons),
Detective Jacob "Jake" Simms (portrayed by Francisco Viana in the first, second and seventh seasons),
Detective Ramos (portrayed by Pablo Soriano in season two and three) and
Detective Weiss (portrayed by
Eli Goodman during season two). ==Novel characters==