!The Class of 3000

!!Sunny Bridges
->'''Voiced by:''' [[Music/OutKast Andre 3000]]
''Like... You gotta crank this thang up!''

* TheAce
* ArtistDisillusionment: In-universe and at the start of the series as he no longer finds pleasure in being a musician (he outright walks out on a concert he was doing in Tokyo and promised them their money back). Lil D and his class re-ignite his passion for it, deciding that while he may be done in the music business, he still loves music.
* BerserkButton: He hates Santa Claus of all people. Due to Santa giving him a pair of ice skates instead of roller skates that got him injured, and lose the part in a Christmas pageant Sunny really wanted to be in.
* CoolTeacher: Admit it, you'd love to have him as your teacher.
* DealWithTheDevil: To get Li'l D out of his. [[spoiler: Then he acts so bad, explaining that he had no soul in his work, and thus gets his soul back and saves both of them from the devil.]]
* FourTemperamentEnsemble: Phlegmatic, being a calm, mature voice of reason.
* IJustWantToBeNormal: To an extent: While he got tired of the music business and being a star, he sill loves music and becomes a teacher, prefering the quietness it comes with it. In one episode,he almost quits when a hoard of celebrities try to teach at the school.
* InexplicablyAwesome
* InkSuitActor: Three guesses who he resembles.
* MagicalNegro
* TheMentor
* NiceHat: Nice straw hat, indeed.
* TeamDad: Especially seems this way to the fatherless Li'l D.
* UnclePennybags

!!Lil' D
->'''Voiced by:''' Small Fire
''Let's crank dis thang up!''

* AesopAmnesia: Suffers from this the most out of everyone in the main cast.
* BookDumb: Incredibly gifted when it comes to strategy and music... Regular school work, not so much.
* DisappearedDad: Mentioned in the pilot episode that he never met his father. He doesn't seem to mind, though.
** HeroicBastard: Possibly.
* FourTemperamentEnsemble: Choleric, being the somewhat rude and hot-headed leader.
* IJustWantToBeBadass: He wants exactly what Sunny has and is willing to take the quick way out.
* InSeriesNickname: Lil' D's real name is unknown.
* {{Jerkass}}[=/=]JerkWithAHeartOfGold: It really [[DependingOnTheWriter depends on the writing.]]
** The "Jerkass" part is downplayed though.
** TookALevelInKindness: At the end of the ChristmasEpisode. [[spoiler: It didn't last long. It's implied that he is back to his normal self by the end.]]
* TheLeader
* LoonyFan: Can be a little bit too obsessive for Sunny Bridges.
* TheNapoleon: Arguably.
* NiceHat: His skipper's cap, usually. (The pilot and ChristmasEpisode give him something else)
* NoodleIncident: Used as a joke twice. First to show how the class ''always'' gets into situations, and a second time to saw just how naughty he has that year.
* RedOni: To Phil's blue. Ironically he's the one with the cool color palette.

!!Madison Spaghettini Papadopoulus
->'''Voiced by:''' Creator/JenniferHale
* ButNotTooForeign: Her last name suggests she is of Greek descent, but she's also mentioned being part-Italian, part-Colombian, and [[RuleOfFunny part-Plutonian]].
* TheChick: One of two.
* CloudCuckoolander
* TheDitz
* DumbBlonde: Though she's beyond [[CloudCuckooLander just dumb]].
* FourTemperamentEnsemble: Sanguine. She's chipper, friendly, and very positive.
* FriendToAllLivingThings
* GenkiGirl
* LiteralMinded: She sold her neighbour's garage at a garage sale once!
* NightmareFuelStationAttendant: Ghosty-Wosty anyone?
* PerpetualSmiler: So much.
* ThePollyanna

!!Phillip P. "Philly" Phil
->'''Voiced by:''' Creator/PhilLaMarr
* [[AlliterativeName Alliterative]] AND RepetitiveName: '''P'''hillip '''P'''hil.
* AmbiguouslyBi: While he's implied to have a crush on Kim and apparently got a girlfriend in "Free Philly", his occasional HoYay moments can hint he swings both ways.
* BigEater: With questionable tastes, like a pinecone covered in mud, or Sloppy Joes made with some sludge.
* BlueOni: To Li'l D's red. Ironically he's the one with the warm color palette.
* DitzyGenius: For all his inventing smarts, he can be rather short-sighted.
** GeniusDitz: Like with Li'l D, it really [[DependingOnTheWriter depends on the episode.]]
* FieryRedhead: Inverted, as he's [[NiceGuy pretty chill.]]
* FourTemperamentEnsemble: Phlegmatic, though in a different way than Sunny. He's slightly submissive and one of the calmest kids.
* GadgeteerGenius
* GogglesDoNothing: His were thought to be this, until "Brotha From the Third Rock" revealed that they're his glasses.
* MusclesAreMeaningless: Can lug a double bass around with no apparent strain, and [[BadassBookworm can stay on a biplane with nothing more than his bare hands at the most.]]
* NoSocialSkills: Downplayed. He's not a hopeless case, but he's bad at reading social cues.
* NiceGuy: Very easygoing, if a little out there.
* NoodlePeople: Has a very thin, tall body shape, giving off this trope.
* TheSmartGuy: One of two. Specializing with various gadgets.

!!Edward "Eddie" Phillip James Lawrence III
->'''Voiced by:''' Creator/TomKenny
* AmazonChaser: Is smitten with the tough Tamika.
* DeadpanSnarker: Not to Kam's extent, but Eddie can get pretty vicious verbally at times.
* FictionFiveHundred: He's somehow rich enough to have ten fingers (as Philly Phil notes when he sees his own eight).
* FourTemperamentEnsemble: Melancholic. He's elegant, surprisingly good at doing physical work, and a bit moody.
* TheLancer
* LonelyRichKid: Which becomes the subject for "Rich Shade of Blue".
* LovableCoward
** CowardlyLion: [[CrowningMomentOfAwesome Remember when he scared away that rabid dog, or when he was willing to be catapulted in to reclaim his role in the play?]]
* MasculineGirlFeminineBoy: Feminine Boy to Tamika's Masculine Girl.
* OverlyLongName
* PreppyName: It could get him mistaken for a king.
* ScrewTheRulesIHaveMoney (and sometimes ScrewTheMoneyIHaveRules)
* StalkerWithACrush: Arguably.
* TeensAreShort: Yep.
* UnclePennybags
* UnrequitedLove: Towards Tamika.

!!Tamika Jones
->'''Voiced by:''' Crystal Scales
''Prove it or move it!''

* ActionGirl
* [[TheBigGuy The Big Girl]]
* TheBully: Often likely to beat up the others.
* FourTemperamentEnsemble: Choleric, though in a different way than Li'l D, being the hot-headed no-nonsense member of the class.
* GrumpyBear
* HiddenDepths: Her house looks like something from Snow White and the only chores she's supposed to do is clean her room and do the lawn. The lawn is surprisingly clean and neat. We also see her rather kind-hearted father and it's implied she is somewhat embarrassed at how nice her folks are and where she lives.
* JerkWithAHeartOfGold
* MasculineGirlFeminineBoy: Masculine Girl to Eddie's Feminine Boy.
* SassyBlackWoman
* SkirtOverSlacks: Sort of, her leggings give off the vibe.
* TomboyishPonytail: More like "Tomboyish Bun", but same idea.
* TookALevelInKindness: In season 2.
* {{Tsundere}}: Sort of.
** Most of the ChristmasEpisode has her in full-blown "deredere" mode.

!!Kam Chin
->'''Voiced by:''' Creator/JaniceKawaye
* ButNotTooForeign: Stated to be born in Columbus, Ohio.
* ButtMonkey: The one who's always picked on.
** ChewToy: ... But we love him for it.
* DeadpanSnarker: Has shades of this.
* FoolishSiblingResponsibleSibling: The Responsible to his sister's Foolish.
* FourTemperamentEnsemble: Melancholic, though in a different way than Eddie. He's very task-oriented, formal, and rigid.
* GoofyPrintUnderwear: As shown in "Mini Mentors" and "The Cure".
* InscrutableOriental: To an extent.
** NotSoStoic: Can show emotions just as well as the rest of the kids. He's just good at keeping them in check.
* JerkWithAHeartOfGold
* PolarOppositeTwins: Compared to his twin sister, he's more serious to his work.
* TheSmartGuy: One of two. More focused on academic work.
* ThoseTwoGuys: With Kim.
* ThroughTheEyesOfMadness: Played for laughs when he gets overheated in "Study Buddies".
* [[WhyDidItHaveToBeSnakes Why Did It Have to Be Hang-Gliding Through Ducks?]]: He has an irrational fear of this and has to survive it in order to save his classmates.

!!Kim Chin
->'''Voiced by:''' Creator/JaniceKawaye
* AsianAirhead: Has her moments in Season 2.
* ButNotTooForeign: Stated to be born in Columbus, Ohio.
* CatchPhrase: "I know, right?"
* TheChick: One of two.
* TheFashionista: She loves shopping and clothes.
* FashionableAsymmetry: As seen in "Tamika and the Beast", her socks are mismatched.
* FoolishSiblingResponsibleSibling: The Foolish for her brother's Responsible.
* FourTemperamentEnsemble: Sanguine, though in a different way than Madison. She's energetic, slightly scatterbrained, and positive.
* PolarOppositeTwins: Compared to her twin brother, she's more into clothing, shopping and arts.
* PinkMeansFeminine: Downplayed. While she's associated with the color pink, only a small part of her outfit is pink.
* [[OnlySaneMan Only Sane Woman]]: Arguably the most normal and well-adjusted of the lot of them.
* ThoseTwoGuys: With Kam.

!Westley Staff

!!Leela Lopez
->'''Voiced by:''' Jennifer Hale
* AlliterativeName: '''L'''eela '''L'''opez.
* BeautyMark
* HartmanHips

!!Petunia Squatenchowder
->'''Voiced by:''' Tom Kenny
* {{Gonk}}
* LethalChef

!!Principal Luna
->'''Voiced by:''' Creator/JeffBennett
* {{Catchphrase}}: "Fantastic!"
* CasanovaWannabe: In regards to Miss Squatenchowder.
* GreenEyedMonster: The subplot of "Free Philly" has him trying to upstage Sunny. Also challenging Sunny to a duel when he mistakenly thinks that Sunny was in love with Ms. Squatenchowder.
* HiddenDepths: Has a hobby of collecting kitchen utensils, which actually wins Ms. Squatenchowder's heart.