Creepie's homeroom and first period science teacher. Dr. Pappas is a methodical and meticulous fellow, especially when he's dissecting frogs or large insects. He's a bit pompous and boring and his lectures put students to sleep, though he doesn't seem to notice. His classroom is full of insects and animals, both pickled for dissection and alive in cages. Creepie often gets in trouble for trying to free the creatures before they go under Pappas' knife - and some of the live ones pose problems for Gnat, i.e. that frog with the really long tongue.
