Elmore Junior High students Penny Fitzgerald Penelope "Penny" Fitzgerald (voiced by
Teresa Gallagher) is a shape-shifting fairy (formerly a peanut with antlers) and classmate of Gumball who belatedly becomes his girlfriend. Like Gumball, she has trouble expressing her feelings. While generally nicer and more level-headed, she can stoop down to Gumball's level. Underneath Penny's shell lies a yellow,
fairy-like self that
shape-shifts based on her emotional state.
Rob Rob (voiced by Charles Philipp, season 2–"The Nemesis" and "The Disaster"–season 6; Max Cazier, TWWWOG onward;
David Warner "The Nemesis"–"The Disaster") is a tall cyclops and former Elmore Junior High student who becomes Gumball's arch-nemesis. He first appears in the series as a background character who was often forgotten by his classmates. After escaping the Void – to which he was exiled as a "mistake" – Rob becomes a "
bad guy" to enact revenge on Gumball and "play a part in the world". He is aware of his fictional existence and his hatred towards Gumball is a result of his role as the protagonist, which forces Rob into the role of a villain. In "The Inquisition", he attempts to save the main cast from the destruction of their world but fails, falling into the Void instead. By the events of "The Rewrite", he is saved by the Awesome Store's owner from the literal
plot hole before ultimately superseding his role to protect the series' characters when it is eventually
pulled from the air.
Carrie Krueger Carrie Krueger (voiced by Jessica McDonald) is a ghost who lives in a malevolent mansion and "enjoys being depressed". and
possess living bodies. She is the daughter of a man who formed a romantic relationship with a female ghost. She and Darwin become a couple in "The Matchmaker". Carrie's last name is a reference to
Freddy Krueger from the
A Nightmare on Elm Street franchise.
Tobias Wilson Tobias Wilson (voiced by
Rupert Degas, season 1; Hugo Harrison, season 2 onward) is a multicolored, cloud-shaped humanoid who is interested in sports, possesses an overbearing self-confidence, and thinks of himself as cooler than he really is. He debuts in "The Third", where he demands twenty dollars to be Gumball and Darwin's friend. When angry, she can develop into a storm cloud capable of causing massive damage.
Bobert 6B Bobert 6B (voiced by
Kerry Shale) is a
robot who is one of the smartest students, but constantly struggles to understand emotion and develop a social life.
Sarah G. Lato Sarah G. Lato (voiced by Jessica McDonald) is a yellow
ice cream cone and student. She is depicted as an obsessive fan of Gumball and Darwin. She is named after Sarah Fell, the show's producer.
Leslie Leslie (voiced by
Kerry Shale) is an effeminate, friendly
daisy who plays flute in the school band and can often be found hanging around the girls. He is Penny's cousin. In "The Diary", he begins dating Wilson Bilson.
Alan Keane Alan Keane (voiced by
Kerry Shale, season 1; Hugo Harrison, season 2 onward) is a teal-colored
balloon who is Carmen's boyfriend. Being filled with helium, Alan regularly speaks in a high-pitched voice. In "The Photo", Gumball envies him for having a beautiful face. Alan rebuffs this, but Gumball replies: "Dude, even your mole looks better than me". In "The Vision" it is revealed Alan secretly plans to take over the world and rule it as a dictator, brainwashing people to eradicate sadness. After discovering this, Gumball and Darwin attempt to assassinate Alan, which they succeed in after many failed attempts – though he reappears in subsequent episodes without any explanation. It was shown in "The Faith" that the world goes through chaos if Alan stops his kindness.
Carmen Verde Carmen Verde (voiced by
Teresa Gallagher, season 1;
Alix Wilton Regan, season 2 onward) is a
cactus who is considered to be a leader.
Teri Teri (voiced by
Teresa Gallagher) is a
hypochondriac paper bear usually found in the nurse's office. Although somewhat self-absorbed and paranoid, she is very nice and is a cheerleader. His surname is a reference to
Jötunheimr, the homeland of
giants in
Norse mythology.
Tina Rex Tina Rex (voiced by Dan Russell, season 1; Stefan Ashton Frank, season 2 onward) is a
Tyrannosaurus who lives in the city junkyard, and a notorious bully. She often picks on her fellow schoolmates, especially Gumball, and Anton.
Anton Anton (voiced by Tony Hull, season 1 to season 6; TBA, TWWWOG onward) is a piece of toast who is forcibly drafted into Tina's gang, hoping that by appeasing her he will avoid her anger. He is prone to getting killed in various freak accidents, only to be resurrected by his parents with a toaster that creates a new slice of him.
Juke Juke (voiced by Hugo Harrison, music by Beatbox Hobbit) is a native of Boomboxemburg with a boombox for a head and he moves to Elmore. He speaks entirely in
beatboxing. As a result, nobody can understand him. He is able to speak English if he is switched from "Music Mode" to "Voice Mode" through a switch on the back of his head, as seen in "The Boombox", but his arms are too short to reach it and his attempts to communicate this fact to others fail.
Clayton Clayton (voiced by
Rupert Degas, season 1; Max Cazier, season 2 onward) is a red ball of
clay who can shapeshift into anything and is a compulsive liar with a tendency to make up absurd stories.
Rachel Wilson Rachel Wilson (voiced by Jessica McDonald) is Tobias' older sister. Despite frequently appearing as a background character in season one, her only prominent role was in the episode "The Party", in which she refuses to allow Tobias' friends to her party unless they bring dates. She ends up taking a personal liking to Darwin. Rachel was written out of the show beginning with season two. In "Darwin's Yearbook", it was revealed that she had gone to college; a doll of her appears in "The Rewrite".
Ocho Tootmorsel Harry "Ocho" Tootmorsel (voiced by Max Cazier) is an
8-bit spider and a generally friendly person, but often overreacts to what people say about. He originally spoke solely in video game blips; later began speaking in comprehensible, albeit distorted, sentences. In "The Score", it is revealed that Ocho arrived to Elmore as a refugee from another planet after his father was killed, hence his mother had to smuggle him in. This, coupled with the fact that he lives a life of poverty, that his mother had to work five jobs to support him, hence he does not see her often, and the fact he is considered an outsider in both his origin and appearance, explains his anger issues.
The Eggheads Colin and Felix (voiced by
Rupert Degas in season 1 and
Kerry Shale in season 2 onwards for Colin and Rupert Degas in season 1 and Hugo Harrison in season 2 onward for Felix) are a pair of
egg brothers who are two of the most intelligent students. They speak with
English accents and consider themselves to be much smarter than their classmates.
Jamie Russo Jamie Russo (voiced by Jessica McDonald, seasons 1–2; Maria Teresa Creasey, season 3 onward) is a "half-cow, half-
troglodyte" creature who is one of Tina's bullies.
William William (
internal monologue narrated by Mic Graves) is a flying eyeball who is Ms. Simian's personal spy and only talks when reporting information to her. He has psychic abilities.
Molly Collins Molly Collins (voiced by Jessica McDonald) is a shy
sauropod. She is a cheerleader and, as shown in "The Pressure", the owner of a
treehouse where she and the other girls hang out. She made several appearances in the show's first season, but was absent for the second season until she is rescued from the Void.
Hot Dog Guy Hot Dog Guy (voiced by
Alex Jordan) is an anthropomorphic hot dog who is defined by his extreme mutual awkwardness with Gumball.
Clare Cooper Clare Cooper (voiced by Naomi McDonald) is an emo girl who is a pinkish-grey-skinned humanoid. She has mixed opinions about Gumball and Darwin, but she is friends with Anais changing her stance towards the former two after the events of "The Others".
Julius Oppenheimer Jr. Julius Oppenheimer Jr. (voiced by Hugo Harrison) is a bomb-headed humanoid styled after a 1920s cartoon character. He has anger issues, and his head explodes when he feels disgusted or angry. Julius is a bully; he often appears in detention or with his gang. His parents are a stick of dynamite named Julius Oppenheimer Sr. and a firework rocket, who also have a 1920s
rubber hose style. Julius's name is a reference to
J. Robert Oppenheimer, the "father of the atomic bomb".
Elmore Junior High staff Principal Brown Principal Nigel Brown (voiced by
Lewis MacLeod, season 1;
Steve Furst, season 2 onward) is a furry
slug who is Elmore Junior High's principal and Ms Simian's love interest. He faked his diploma and does not have the educational qualifications to be a principal. He teaches music, judges cheerleader tryouts, leads the school's band, and is a substitute sports teacher. Along with Mr. Small and Ms. Simian, he used to teach gym until replaced by Coach Russo. His Cartoon Network biography states that his romance with Ms. Simian was detrimental to his profession, leaving him unable to properly run Elmore Junior High. He has a face on the back of his head similar to that of Quirinus Quirell and
Lord Voldemort from
Harry Potter.
Ms. Simian Lucy Simian (voiced by
Lewis MacLeod, season 1; Hugo Harrison, season 2 onward) is a 2-million-year-old
baboon, the sadistic teacher of Gumball and Darwin's class as well as a major antagonist. She takes pleasure in giving her students pop quizzes. She is generally unpleasant, hates children (especially Gumball), and is hated by the student body. Principal Brown is her love interest. She has a generally antagonistic relationship with Gumball, but he begins to show respect for her in "The Teacher". Her face intentionally resembles that of the
Grim Reaper.
Mr. Small Steve Small (voiced by
Lewis MacLeod, season 1;
Adam Long, season 2 onward) is the Elmore Junior High guidance counselor, a
cloud man who is interested in
New Age culture and possesses
hippie-like appearance and behavior. Mr. Small's unconventional teaching methods are usually more confusing than helpful, and students often leave his office confused. It is revealed in the episode "The Fraud" that he is not a U.S. citizen, though it is unclear if he was merely born elsewhere or renounced his citizenship. He lost his love, Janice, which in the episode "The Void" is revealed to be a purple van that runs on "good vibes". His mannerisms are similar to those of Mr. Van Driessen from
Beavis and Butt-Head.
Rockwell "Rocky" Robinson Rockwell "Rocky" Robinson (voiced by
Lewis MacLeod in season 1, Hugo Harrison in season 2, and
Simon Lipkin in seasons 3 onward) is an orange, fuzzy
Muppet-like character who performs odd jobs, mostly as janitor, cafeteria worker, school bus driver, and, in "The Curse", the clerk at the lost and found office. He is the son of Mr. and Mrs. Robinson, the Wattersons' next-door neighbours, and is generally good-natured and gets along with the children well.
Coach Russo Coach Russo (voiced by Dan Russell) is a large, pink 3-dimensional cube who is Jamie's mother. The newest member of the faculty, she works to ensure that all of the students are fit like her daughter. She makes her debut appearance in "The Coach" and speaks in a consistent
deadpan.
Mr. Corneille Moonchild Corneille (voiced by
Simon Lipkin) is a frog and the 8th-grade teacher of geography. He pretends to be sophisticated but has a fake personality. As of "The Cage", he is in a relationship with Joan Markham, the school nurse. His picture is on all of his history books.
Joan Markham Joan Markham (voiced by
Teresa Gallagher) is the school nurse. She is in a relationship with Mr Corneille, starting in "The Cage". She hates her job. She does not know how to help the students because most of them have biologies she has no clue how to work with. She is always sarcastic because of this and tries to do the least work possible to help her students. She is also a paramedic, doctor, and nurse at a hospital, even though she hates her job. She has long blonde hair under her hat.
Other Watterson/Senicourt family members Frankie Watterson Frankie Watterson (voiced by
Richard "Rich" Fulcher) is a rat who is a conman. He is the ex-husband of Granny Jojo and the father of Richard who abandoned them.
Joanna Watterson Granny Jojo (voiced by
Sandra Dickinson) is the Watterson children's grandmother and also Richard's mother. She is a pink rabbit who speaks in a
New York accent. She was previously married to Frankie, who abandoned her and a young Richard under the pretence of going out to buy milk; She later marries Louie.
Louie Watterson Louie Watterson (voiced by Dan Russell in season 2 and "The Kids",
Shane Rimmer, season 3 to season 6; TBA, TWWWOG onwards) is a black mouse and a former member of a crew of Elmore senior citizens that includes Betty, Donald, and Marvin Finkleheimer. Now he is Granny Jojo's step-husband.
Daniel and Mary Senicourt Daniel (voiced by Clive Russell) and Mary Senicourt (voiced by Liza Ross) are Nicole's parents. Daniel shares his daughter's short-temperedness and violent tendencies; while Mary is more level-headed yet snobby. Regardless, from an early age, both parents wanted Nicole to succeed no matter the cost. These sky-high expectations eventually drove her over the edge; causing her to argue and storm away from her parents come her early adulthood to instead spend time with Richard, who would come to be her eventual husband. Neither Daniel nor Mary came to their daughter's wedding, despite being invited. The two reunite with Nicole thanks to the latter's kids, but the reunion ends up bitter as another set of arguments began to spark. This all comes to a head when Nicole admits she was better off separated; however, her parents admit they
did miss her all this time. Indeed, Nicole just wants to see them again, mending their relationship with their daughter. By the events of "The Portrait", however, Mary had been seeing a younger
toucan.
Evil Turtle Evil Turtle is a female
African softshell turtle and the Watterson's former family pet purchased by Richard from a mysterious shopkeeper operating from a van. She is a recurring enemy of the Watterson family, before she laid her eggs and swam away with her children into the ocean.
Other characters Mr. and Mrs. Robinson Gaylord and Margaret Robinson (Gaylord voiced by
Rupert Degas in season 1, Stefan Ashton Frank in season 2 onward, and Margaret voiced by
Teresa Gallagher) are the Wattersons' stuck-up, grouchy, next-door neighbors, and Rocky's parents. They are grey
Muppet-like characters and hate their neighbors with a passion. While Mr. Robinson is grumpy and short-tempered, Mrs. Robinson is a purely evil woman who enjoys causing suffering to others. Their constant bickering is a focal point of their relationship, and they actually enjoy doing so. Mr. Robinson owns a prized 1970
Cadillac Coupe de Ville Convertible.
Banana Barbara and Banana Bob Banana Barbara (voiced by
Sandra Searles Dickinson, Naomi McDonald) and Banana Bob (voiced by
Mic Graves (Season 1 to 6; TBA TWWOG onwards) are recurring characters and the parents of Banana Joe. They are both bananas with googly eyes and lips, Bob having a mustache and Barbara having a bow. Barbara is best known for being able to predict the future in her art.
Harold Wilson Harold Wilson (voiced by
Kerry Shale) is the father of Tobias Wilson and works as a psychotherapist. He has been making fun of Richard Watterson ever since playing a prank on him in high school, as seen in "The Cycle". Harold would receive his comeuppance in "The Tracking" after Richard, who had agreed to a bet revolving fitness trackers, breaks the tracker with the help of his family and eventually sending Harold flying into a car.
Gary Hedges Gary Hedges or Harry Gedges (voiced by Dan Russell in "The Fridge" onward) is a neighbor of the Wattersons who lives on the left side. He is a purple moose with large antlers and works as a mailman. He is commonly seen wearing a pale brown hat, green sweater with blue slacks. In "The Neighbor", it is revealed that his real name is meant to be secret and his pseudonym is Harry Gedges by which Gumball and Darwin did not know him.
Larry Needlemeyer Larry Needlemeyer (voiced by
Kerry Shale) is an origami rock, who works at almost every establishment in Elmore, including the grocery store, the gas station, the convenience store, several fast-food restaurants and the DVD rental shop. He was previously known as "Lazy Larry", the laziest person in Elmore until he lost his title to Richard and morphed into a hard worker. Larry is generally distrustful of the Wattersons, as they often get him into trouble. In "The Pizza", it is revealed that if he does not have a job, Elmore would fall into chaos. He has a girlfriend named Karen.
Fitzgerald Family Patrick (voiced by Dan Russell) is Penny's father, Judith Fitzgerald (voiced by Maria Teresa Creasey) is the mother of Penny and Polly and is married to Patrick Fitzgerald, and Polly (voiced by Teresa Gallagher) is Penny's younger sister. They also have a pet tarantula named Mr. Cuddles. Several more members of the Fitzgerald family appear in "The Amadain", where they are revealed to also be shapeshifters hiding their true forms behind shells.
Marvin Finkleheimer Marvin Finkleheimer (voiced by Dan Russell in season 2 onward) is a red bean who lives at a house and likes to beat kids with his cane if they help him across the street. He was originally going to be named Bert, and he is called that by the yellow old man, Donald, and Louie but that was changed/retconned by the writers.
Donut Cop Doughnut Sheriff (voiced by
Lewis MacLeod in season 1, and Dan Russell in season 2 onwards) is a pink-frosted doughnut who, as his name suggests, is an officer in Elmore's police force. During later seasons, he has more cops by his side, including Coffee Cop, Hamburger Cop, and Earl (who is a hot dog), and Fry Cops. His voice and personality is based on that of
Chief Wiggum from
The Simpsons.
Sal Left Thumb Sal Left Thumb (voiced by
Kerry Shale) is one of Elmore's most wanted criminals, a fingerprint whose weapon of choice is a rusty spoon, as seen in "The Spoon".
Felicity and Billy Parham Felicity and William Geoffrey "Billy" Fitzgerald Kitchener Parham, III (voiced by
Sandra Searles Dickinson season 2 onward and
Teresa Gallagher in "The Kids" for Felicity and Richard Overall (Season 2 to Season 6; TBA TWWOG onwards for Billy) are an orange humanoid and a blue blob, respectively. Billy appears to be an intelligent and snobbish young boy who asks his mother random questions about life. He speaks with a sarcastic deep British voice. Felicity, while overbearing and overprotective of her son, is equally as snobbish as him, believing herself to be superior to the others in Elmore - which sparks a rivalry with Nicole. Despite this, however, the Parhams indeed have flaws: Billy did not have much friends, sans Anais, who rejected him after he expressed his hatred for
Daisy the Donkey, to the point Gumball had to talk him out of his closed-mindedness; and Felicity's ego is so big, her psyche has become borderline psychotic and unstable.
Mr. Rex Mr. Rex is Tina Rex's father who loves to eat invaders at home.
Mrs. Jötunheim Mrs. Jötunheim (voiced by Sandra Searles Dickinson) is a green-skinned witch and the mother of Hector.
Mowdown Phillip "Mowdown" (voiced by
Simon Lipkin) is a violent giant pink teddy bear who wears a shirt with a heart on it. Mowdown is one of the more violent members of Julius' crew.
Kenneth Kenneth is a greyish-brown monstrous blob creature created by Gumball mixing disgusting things into a jar in "The Microwave" and Richard accidentally microwaving it.
Carlton, Troy, and Mr. Kreese Carlton and Troy (Carlton voiced by Hugo Harrison and Troy
Fergus Craig) are two teenage human boys from Richwood High. Their design takes inspiration from the Saturday morning cartoons of the 1980s. Self-proclaimed masters of
tennis, Carlton and Troy believe themselves to be better than Elmore, despite Gumball's general apathy towards them, their coach, Mr. Kreese (voiced by
Steve Furst), the latter's playground bully attitude, and his attempts to raze Elmore Junior High to build a golf course. ==Notes==