Charles is a wealthy man, and Foofie is his pet snail. He and Foofie have won the Bikini Bottom Pet Contest five times in a row until SpongeBob won the competition in the episode Grooming Gary. Foofie has a mustache, as Charles does. Charles has a top hat, a tuxedo, and a parasol. Foofie has a shiny golden shell and a diamond collar. Charles tells SpongeBob the only way to prove your pet's beauty is to win the pet contest. But of course, Foofie does not like the over-pampering he has been given by Charles.
Charles was also seen in the episode Bumper to Bumper, as a character in a TV show that two fish are watching in 3-D.
"Come on now, Foof."
"Does anyone speak Snail?"
"At least I know you wouldn't act like any of these heathens, right, Foofie?"