In "Power Trip," Rocko's comic store boss leaves, and puts him in charge. Rocko hires Fillburt as extra help while his boss is away, but makes the fatal mistake of sitting in his boss' office and chair...corrupting him with power.
In "To Heck and Back," Heffer's gluttony finally catches up to him when he chokes on a chicken bone, and ends up in Heck ("A Friendly Community").