Characters / My Gym Partner's a Monkey

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    Main Students 

Adam Lyon

Voiced by: Nika Futterman

A human boy who was transferred from Chester Arthur Middle School to Charles Darwin Middle School by an accidental misspelling of his last name from "Lyon" to "Lion".

Jake Spidermonkey

Voiced by: Tom Kenny

A spider monkey who quickly became Adam's best friend. He is often very possessive of Adam and hates not having him around regularly. Jake is emotional and goofy who takes to heart some of Adam's comments and actions, leading to some overly dramatic and exaggerated reactions. He can be lazy and selfish, but at the same time he is also fairly sensible.

Windsor Gorilla

Voiced by: Rick Gomez

A highly intelligent lowland gorilla who serves as the anti-bully at the school and often gives confusing wisdom to people. He speaks in a soft-spoken and nearly monotonous manner, often stringing together technical words as a matter of his normal speech.
  • Ambiguously Gay: In The Hyena And The Mighty, he calls Rufus Hyena his sweet, implying the two may be in a relationship despite Rufus being a one shot character. However, later, he was seen being attracted to another female gorilla.
  • The Big Guy: A large gorilla.
  • Deadpan Snarker: Prone to sarcasm.
  • Genius Bruiser: He's both intelligent and powerful.
  • Gentle Giant: Despite his massive physique, he's perfectly capable of taking care of a baby for a school project.
  • Shown Their Work: Gorillas are known to be large, intelligent and generally mild-mannered. Windsor's status as a stoic Genius Bruiser fits perfectly in this regard.

Ingrid Giraffe

Voiced by: Grey DeLisle

A female masai giraffe. Her towering height only adds to her feelings of insecurity as she tries desperately to blend into the background. She has a crush on Adam.

Slips Python

Voiced by: Rick Gomez

An easy-going, street-talking green tree python. He is an underachiever and excessive daydreamer who's gullibility allows him to believe anything he hears, which makes him a constant source of misinformation.
  • Beware the Silly Ones: Despite being a ditzy and a self-admitted "loser flunkie", he's the only member of the group who is an actual carnivore, and can be rather dangerous when he becomes hungry.
  • Cloud Cuckoo Lander: His antics and personality make him border one being one
  • The Ditz: Moreso the anyone else in the show. He is very gullible.
  • The Heart
  • Reptiles Are Abhorrent: Averted. He's actually a pretty decent guy.
  • Shown Their Work: Pythons are slow-moving, nearly silent animals that can often be found hanging from tree branches and sunning themselves, especially after a particularly big meal. Imagining one as a laid-back slacker is not much of a stretch.
  • Surfer Dude: Talks like this.
  • The Stoner: Acts like one.

Guadalupe "Lupe" Toucan

Voiced by: Grey DeLisle

A female Keel-billed toucan, who is loud-mouthed, acerbic, dominating and materialistic, although she considers herself to be mild-tempered and low maintenance.

    Other Students 

Virgil "Bull" Sharkowski

Voiced by: Phil LaMarr

A bull shark and the school's bully.
  • Always Someone Better: His older sister is a way better bully than he'll ever be. He's extremely sensitive about this fact. Especially so when she managed to teach Adam to go frenzy in minutes though trolling. A concept he himself spent the whole episode trying to teach the ever oblivious Adam to no avail.
  • Big Little Brother: His older sister is much smaller he is.
  • The Bully: At least until his big sister comes in.
  • Mobile Fishbowl: Wears a special headset over his gills to breathe while on dry land.
  • Only Known by Their Nickname: He's mostly called "Bull"
  • Verbal Tic: Takes a deep breath between his words every once in a while.

Henry Armadillo

Voiced by: Tom Kenny

A nine-banded armadillo with a Texas accent and a reporter in the school media.

Phineas Porpoise

Voiced by: Phil LaMarr

A nerdy bottlenose dolphin.

Margaret Rhino, Joanna Buffalo, and LeTanya Hippo

A trio consisting of a Sumatran rhino, cape buffalo, and hippopotamus.

James Ant

A red ant.

Dickie Sugarjumper

Voiced by: Creator/Tom Kenny

A sugar glider and the school jokester.

Endugu Elephant

A Jamaican-American African Elephant.

    School Staff 

Principal Poncherello Pegone Pixiefrog

Voiced by: Maurice LaMarche

The pint-sized African Bullfrog head of Charles Darwin Middle School.
  • Bunny-Ears Lawyer: Although not very bright, he has been shown to handle crisis quite well.
  • Dean Bitterman: Averted. Though on one occasion he threaten Adam to get Henry to stay in the schoolnote  or else would send him to Siberia, though later he admit he was bluffing.
  • Pint-Sized Powerhouse: He once beat a rhinoceros in a wrestling match.
  • Pet the Dog: When the entire student body (even Adam) turns on Slips because they don't understand that he's shedding, Pixiefrog clears up the misunderstanding by having them watch a documentary on shedding.
  • The Napoleon: He's a tiny frog that's in charge of the whole school.
  • Small Name, Big Ego: And small body.
  • Why Did Ithave To Be Snakes: Well,...lawyers actually,

Mrs. Geraldine Sharon Warthog

Voiced by: Grey DeLisle

Principal Pixiefrog's secretary.

Mr. Cyrus Hornbill

Voiced by: Maurice LaMarche

A rhinoceros teacher usually seen teaching whatever class is not covered by the other teachers.

Mr. Maurice Mandrill

Voiced by: Maurice LaMarche

The school counselor.

Miss Chameleon

Voiced by: Nika Futterman

The overly-dramatic drama teacher.

Coach Tiffany Gills

Voiced by: Brian Doyle-Murray

A deep-voiced goldfish and the school's gym teacher.
  • Large Ham: She almost always talks in a loud voice.
  • Mobile Fishbowl: Teaches from a bowl wheeled around by Vice Coach Horace.
  • The Napoleon: She's a tiny goldfish who is aggressive.
  • Vocal Dissonance: You wouldn't expect a goldfish to have such a deep voice, would you?

Vice Coach Horace Ferret

Voiced by: Tom Kenny and Robert Goulet in Animal School Musical

Coach Gills' ferret assistant.

Mrs. Eugenia Tusk

Voiced by: Cree Summer

The lunchlady.

Nurse Jacquline Gazelle

Voiced by: Grey DeLisle

The school nurse.
  • Dumb Blonde: She mentioned that she's got a brain the size of a peanut in "Inoculation Day".
  • Jerkass Ball: Tried to shave Rufus's hair off for no reason in "The Hyena And The Mighty".
  • The Medic: Due to being a school nurse.
  • School Nurse: Duh.

Mr. Blowhole

A whale who is usually seen as the teacher of the nerds. Accompanied by whale noises whenever he talks.


Kerry Anderson

Voiced by: Cree Summer