Slimey's earliest known appearance is in a season 2 episode in which Oscar enters Slimey in a Sesame Street Pet Show. In another early episode, Oscar accidentally locks himself out of his trash can. Tom suggests that he saw the lock off, but that would ruin the new lock. Luis offers to pry off the lid with his crowbar, but that would dent the lid. Oscar is saved when his pet worm Slimey slithers the key out through the crack between the trash can and lid. Slimey enjoys having chapters of "Trash Gordon" read to him before he goes to bed at night. He loves all kinds of books.