Main •
Jennette McCurdy as Sam Puckett, a
tomboy who is aggressive, loves pranks, and hates working. After her best friend Carly Shay moved to Italy to live with her father, Sam tours the West Coast on her motorcycle until she saves Cat from a garbage truck. She becomes friends with Cat and joins her in the babysitting job they start. She has a heart of gold and a soft spot for Cat-she will threaten violence on anyone who harms her friends. Sam is not afraid of anything and is handy at fighting or bossing her way out of any situation. •
Ariana Grande as Cat Valentine, who is sweet, naive, bubbly, and almost always happy. She has a playful mood, often takes things literally, and faints when she is frightened. She has a short attention span and has bright red hair dyed to resemble her favorite snack, a red velvet cupcake. Cat has been living with her grandmother Nona since her parents went away to visit her brother, who had been sent to a special facility for his "eccentricities". She can be emotional and never takes criticism well. Despite her ditziness, she is actually very smart and empathetic. In the earlier parts of the show, Ariana Grande dyed her hair red when playing Cat Valentine (which she also did when playing Cat on
Victorious) until it was changed to her wearing a red wig in later episodes, due to her hair falling out from the dye. •
Cameron Ocasio as Dice, Sam and Cat's neighbor. He is a young hair model. He is Goomer's manager, and often tries to sell things to make money. •
Maree Cheatham as Nona, Cat's cheerful, supportive, and independent grandmother. Fun-loving and young at heart, Nona prefers the company of people her own age. Although she is always around whenever Sam and Cat need her, she has moved out of the apartment she shared with Cat and into Elderly Acres to be nearer to her friends, allowing Sam to move in permanently. She is criticized for not being in touch with the younger generation, and tells stories which fail to interest them.
Recurring • Zoran Korach as Goomer, a professional mixed martial artist who trains at Punchy's Gym. He is 27 years old but has the mentality of someone much younger. He is very dim-witted and easily confused, but despite his childish nature, he is very good at fighting. Dice took over his management after his original manager claimed Goomer was "too stupid to manage". •
Dan Schneider as the voice of Tandy, a red male robot that works at the restaurant "Bots" as a waiter. •
Lisa Lillien as the voice of Bungle, a blue female robot that works at the restaurant "Bots" as a waitress. • Nick Gore as Randy, a kid who appeared numerous times in the show and is constantly introducing himself. Randy was rumored to appear in one episode, but the creator of the show, Dan Schneider, found him funny so he became a recurring character. • Ronnie Clark as Herb, a man who appears to be homeless, but he is in fact rich and owns a condo.
Special guest stars •
Eric Lange as
Mr. Sikowitz, Cat's acting teacher at
Hollywood Arts, an eccentric aging hippie who doesn't wear shoes for some reason. His teaching methods are often unconventional, such as when he throws a ball at Cat while she is performing, but they are sometimes effective. He is a recurring character in
Victorious and appeared in "#MommaGoomer". •
Penny Marshall and
Cindy Williams as Sylvia Burke and Janice Dobbins, the original creators of the puppet show
Salmon Cat, a children's show from the 1970s. Marshall and Williams are famous for playing Laverne DeFazio and Shirley Feeney, respectively, on
Laverne & Shirley. The characters live in apartment buildings named "Feeney Villas" and "DeFazio Arms". •
Kel Mitchell as Peezy B, a huge rap star who has turned down Cat's music video audition. •
Abby Wilde as
Stacey Dillsen, a character from
Zoey 101. She appeared in the episode "#MadAboutShoe". •
Scott Baio as Officer Kelvin, a police officer who arrests Sam and Cat for "stealing money" from an ATM at the Handy Quick when Yokvish catches on to Cat's project. •
Elizabeth Gillies as
Jade West, Cat's friend from Hollywood Arts. She is mean, aggressive, violent, and often offends Cat. She befriends Sam when they discover that they have a lot in common. •
Nathan Kress as
Freddie Benson, Sam's friend from Seattle and ex-boyfriend. He likes technology, and served as technical producer of the web show on
iCarly. Cat brings him to her house in order to flirt with him at the time when Sam was hanging out with Jade. •
Matt Bennett as
Robbie Shapiro, Cat's friend and love interest. He is a nerd who carries a puppet named Rex (who he makes speak as a ventriloquist). He kissed Cat in the last few episodes of
Victorious. When Cat hits on Freddie out of jealousy of Sam's friendship with Jade, Robbie is brought in by Jade so that Sam can hit on him. •
Michael Eric Reid as himself, he plays
Sinjin Van Cleef in
Victorious. Michael appears in "#BlooperEpisode" and tells Zoran Korach that he knows what it's like to be left out for not being a main character. • Danielle Morrow as
Nora Dershlit, an old enemy of Carly, Sam, and Freddie. In "#SuperPsycho," her pet chicken Maurice helps Nora escape from the prison somewhere near Seattle so that she can exact her revenge. •
Reed Alexander as
Nevel Papperman, an old enemy of Carly, Sam, and Freddie. In "#SuperPsycho," Nevel is seen in a Peter Sinai hospital for the very sick upon contracting Porcupox (a disease which somehow comes from a porcupine). Sam and Cat visit him in order to get advice on how to find Nora Dershlit. •
Noah Munck as
Gibby Gibson, a friend of Carly, Sam, and Freddie. After he is visited by Nora during his date with a girl at a movie theater, Gibby tips off Sam that Nora has escaped from prison. •
Jessica Chaffin as
Coco Wexler, a character from
Zoey 101 whom Sam and Cat meet at the airport. Coco was once married to Carl, then they divorced. Coco is devastated when Carl proposes to her mother. •
Josh Server as Agent Partridge, an airport agent who interrogates Dice and Goomer after they are mistaken for a terrorist plot.
Guest stars •
River Alexander as Dilben, a rude, annoying and obnoxious boy who claims his father is the landlord of the apartment building, and threatens to kick the girls out of their apartment unless they get rid of a goat they are looking after. He only appears in the episode "#NewGoat". He has an obsession for wearing capes, and each one of his appearances in the episode usually end with Sam pulling his trousers around his head, putting his shirt around his legs, and stealing his cape. At the end of the episode, it turns out Dilben's father isn't the landlord of the apartment building, but instead sells "wide shoes to wide-footed women", which Dilben finds embarrassing. • Griffin Kane and
Emily Skinner as Max and Chloe, a brother and sister who, alongside their baby brother Darby, were among the less rambunctious kids babysit on Nona; Sam and Cat babysit them now. They appear in episodes "#Pilot","#NewGoat", and "#PeezyB". •
Sophia Grace Brownlee and Rosie McClelland as Gwen and Ruby, British cousins whom Sam and Cat babysit in the episode "#TheBritBrats". At first they seem polite, but later they behave quite rudely. They are experienced con artists who cheat Dice out of $500 and Cat out of her bicycle. In a loose parody of
The Sting, Sam concocts a rigged bingo game to trick the British brats into surrendering Dice's money and Cat's bike. They also were in "#RevengeOfTheBritBrats" where they return and try to destroy Sam & Cat's friendship. This plan failed when Sam and Cat caught onto their plans. •
Cyrus Arnold as BJ Malloy, a boy who loves to eat eggs and call Dice "Diceberg", because it rhymes with "iceberg" and this attitude stresses Dice. He considers Dice as his friend. • Steve Lewis as Brody, a spear fisherman that always boasts his job and is often seen with a speargun in his hand. • Ryan P. Shrime as Yokvish, a clerk at the Handy Quick who enjoys taking selfies and grooming himself. He appeared in "#MagicATM" and "#BlueDogSoda". ==Episodes==