Charles is a wealthy man. He won the Bikini Bottom Pet Show five times in a row until SpongeBob won the competition in the episode "Grooming Gary." Charles tells SpongeBob the only way to prove your pet's beauty is to win the pet contest.
He is a olive-tan fish with a light teal dorsal fin and a mustache. Charles has a top hat, a tuxedo, a parasol, and a cravat. His appearance is considered to be rich, and stylish. His pet snail Foofie also seems to have the same rich appearance as him.
"Come on now, Foof."
"Does anyone speak Snail?"
"At least I know you wouldn't act like any of these heathens, right, Foofie?"