Slug is the father to Zunk and husband to Snarg and the leader in the trio of ghosts. He is short, red, and has a bad temper. Slug is the paternal entity in a trio of ghosts. They appear to originate from New Jersey, according to the P.K. E. readings taken while they haunted a Conrad's chocolate plant. The Ghostbusters eventually captured them after a lengthy bust, but they escaped from the Containment Unit. Slug desired revenge and set up a fake paranormal eliminations and investigation business to bankrupt the Ghostbusters.