Guest Stars James Arnold Taylor voices The Leader Steve Blum voices Sauron J.K. Simmons voices J. Jonah Jamesasaurus Clancy Brown voices General Rossasaurus Fred Tatasciore voices Doombot Fred Tatasciore voices Dino #1 Drake Bell voices Spider-Raptor James Arnold Taylor voices Moon Boy James Arnold Taylor voices Curious Dino Ben Diskin voices Dino #2 Steve Blum voices El Diablo Steve Blum voices Baby Devil Dinosaur