Special Guest Stars Roseanne Barr voices Herself Guest Stars Phil LaMarr voices Hermes Conrad Lauren Tom voices Amy Wong David Herman voices Scruffy Phil LaMarr voices Dwight Conrad David Herman voices Dr. Ben Beeler David Herman voices Leg Mutant David Herman voices Whale Biologist David Herman voices Devil Tattoo David Herman voices Cigar Store Clerk Uncredited Frank Welker voices El Chupanibre Frank Welker voices Caddy