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