Philip J. Fry / Frydo / Professor Hubert Farnsworth / The Great Wizard Greyfarn / Dr. Zoidberg / Monster Zoidberg / Farmer / Dwarf / Smitty / Treedledum (voice)
Turanga Leela / Leegola (voice)
Bender / Titanius Anglesmith / Igner / Ignus / Sal / Hood Ornament Thief / Hermaphrobot / Frydo's Reflection #1 / URL (voice)
Mom / Momon / Turanga Munda / Nurse Ratchet / Linda / Slurm Queen / Ship's Computer / Natalie Maines / Intercom Robot / Rosie the Robot Maid / Swamp Hag / Centaurette (voice)
Walt / Waltazar / The Scary Door Narrator / Dr. Perceptron / Morbo / Calculon / Pay 'n' Chew Robot / Killbot #3 / Morcs / Centaur / Peaches / Trolls (voice)
Hermes Conrad / Hermaphrodite / Dwight Conrad / Killbot #2 / Bellboy Robot / Nibblonian #1 / Slave Robot (voice)
Amy Wong / Gynecaladriel / Chinese Boy (voice)
Larry / Larius / Turanga Morris / Scruffy / Dr. Ogden Wernstrom / Roberto / Mad Hatter Robot / Nibblonian #2 / Cook / Redneck / Military Man / Killbot #1 / Frydo's Reflection #2 (voice)
Cubert Farnsworth / Indian Boy (voice)
Nibbler / Trolls / Tyrannosaurus Rex / Monkey / Polar Bear / Rat / Chickens / Tunneling Horror (voice)
Gary Gygax (voice) (archive footage) (as Gary Gygax)
Rich Little's Head as Howard Cosell (voice)
George Takei's Head (voice)
The Die of Power (voice) (uncredited)