Norman Pfister

Norman Pfister is a minor character on the television show Buffy the Vampire Slayer. He appears in "What's my Line, Part One" and "What's my Line, Part two" and is a member of the Order of Taraka, a group of assassins that is infamous in the underworld for its efficiency. They are only used once on the show when Spike calls on them to kill Buffy. Norman is killed when Cordelia Chase stomps on him in his bug form, broken up into "his liiiiittle buggy parts." 

Norman can take human form but is actually composed of thousands of mealworms that can disassemble and reassemble allowing him to fit through small spaces. He also feeds on dead bodies, usually of those he has killed in his disassembled worm state.