He is a light blue and turquoise fish who wears red-orange shorts. He has blue lips, blue arms and legs, and a blue fin. His female version consists of wearing a red bra and a red skirt.
He seems to be fond of eating Krabby Patties since he is a regular customer at the Krusty Krab. He also appears to be fond of magic because in the episode "Hocus Pocus," he stars in a commercial for Mr. Magic's Magical Kit and seems to enjoy the product. He even appears as a magician in "My Leg!" He also appears to get easily offended when others insult his eating habits as shown in "To SquarePants or Not to SquarePants" where he got offended and angry about SpongeBob commenting about him having too many triple Krabby Patties with cheese.
Role in series
He is seen watching the weightlifting competition, when SpongeBob rips his pants laughs. Later, when fakes his become annoyed and leaves SpongeBob along with everyone (including Sandy).
When Plankton slips where SpongeBob mops, he tells Peterson Nat Tucker there should be a wet floor sign there. To which Nat replies "Yeah, if that were me who slipped, I'd sue old man Krabs for all he's got." Plankton questions if it includes the Krabby Patty secret formula to which Charlie replies "of course." Later, during Mr. Krabs' case against Plankton Charlie can be seen.
He tries to order a Krabby Combo but Squidward does not let him. He then tries to order a Double Krabby Patty but SpongeBob does not let him either. He finally tries to order a Triple Krabby Patty with cheese and SpongeBob tells him that he thinks he had too many of those, causing him to get angrily offended and leave.