| Character Information
Carlton is a blond human boy teenager. He wears a pale blue sweater with a pink sweater tied around his neck, and white shorts with a green sweater tied around his waist.
Carlton thinks he's so hardcore, more hardcore than Gumball and Darwin (and possibly than all of Elmore). He is very boastful, and can be a real bully along with Troy. Along with this, he is very ignorant as shown when he insists on fighting with Gumball and Darwin (even after admitting that they are not hardcore many times) and becoming friends with them when the Watterson brothers did nothing at all to earn his respect. He also seems to be not so smart, and this may have been hinted when Mr. Kreese reminds him and Troy that they "don't think," but rather they "do what they're told."
- "The Sweaters": He and Troy challenge Gumball and Darwin to a tennis match.
- "The Name": He and Troy appear in Gumball's memories.
- "The Society": He gets his pig mascot costume painted to look as if he has been roasted, gets dragged to Elmore Junior High by Gumball, and laments how he has been made fun of.
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- Along with Troy, he is styled after human characters from the 70s/80s, mainly ones from Filmation produced shows.
- He, Troy, Santa Claus, and Mr. Kreese are the only animated humans to appear on the show.
- Troy, Mr. Kreese, and Carlton were originally going to be animals, according to their earlier character models.