He is a olive-tan fish with a light teal dorsal fin and a mustache. Charles wears 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.
Role in series
Charles tells SpongeBob the only way to prove your pet's beauty is to win the pet contest.