Tress MacNeille
Sully (voice), Bernie (voice), Princess Dot (voice), Dave Burl (voice), Old Woman (voice), Brie (voice), Queen Roach / First Lady / Time Machine Computer (voice), First Lady (voice), Rikki Lake (voice), Mary Hartless (voice), Mrs. Applebee (voice), Wench (voice), Passerby (voice), Eisenhower (voice), Marna Strutt (voice), Female Rock Star (voice), Japanese Girl (voice), Phyllis (voice), Katie C. (voice), Rue McClanahy (voice), Cheerleader (voice), Billie (voice), Mousealope Calf (voice), Greta (voice), Janet (voice)
Frank Welker
Gollyzilla (voice), Girth Plotz (voice), Mr. President (voice), Maurice (voice), Ross Perot (voice), Grandfather (voice), Fred flopped (voice), The President (voice), Fred Floppel (voice), General Odin (voice), Bartender (voice)
Jeff Bennett
Kale Mumphausen (voice), Kilmer (voice), Sampson (voice), Game Announcer (voice), Locke (voice), Baloney (voice), Christopher W. (voice), Hippie (voice), Leonard Sheldon (voice), Tom Cajones (voice), Wensleydale (voice), Schotzie (voice), Zalgar (voice), Dr. Mordough (voice), Chris (voice), Alan Fontain Bisque (voice)
Corey Burton
Cushing (voice), Strawboater (voice), Evil Clown (voice)
Billy West
Anthony H. (voice), Dean (voice), Larry (voice), Earl Wendell (voice), Receptionist (voice)
Jim Cummings
Chuck (voice), V/O #1 (voice), The Mist (voice), Punk (voice), Fred Floppel (voice)
Jess Harnell
Wakk Skylicker (voice), Alien Singer (voice), Fred Spinatra (voice)
Julie Brown
Minerva Mink (voice), Danette Spoonabello (voice)
Paul Rugg
Mr. Director (voice), Mr. Sultana (voice)
Townsend Coleman
FBI Agent (voice), Bobby-Bob Yokel (voice)
John Mariano
Robert (voice), Bobby (voice)
Earl Boen
Santa (voice), Earth (voice)
Sam McMurray
Taxman #1 (voice), Shawn (voice)
Brian Stokes Mitchell
Big Jimmy Fruithead (voice)