Clyde used to be Little Miss Naughty's pet roach, Mr. Nervous and Little MIss Sunshine were afraid of him. But Miss Naughty decided to put him in Mr. Messy's house to trick him into thinking he had an infestation and she was an exterminator, but Mr. Messy didn't want her to get rid of him, because he keeps him company and cleans up his food for him. So now he lives in Mr. Messy's house.