| Voice | Debi Derryberry (as Jimmy Neutron), Patrick Stewart (as King Goobot V), Rob Paulsen (as Carl Wheezer / Mr. Wheezer / Mrs. Wheezer), Carolyn Lawrence (as Cindy Vortex), Jeffrey Garcia (as Sheen), Crystal Scales (as Libby Folfax), Martin Short (as Ooblar), Frank Welker (as Goddard / Poultra), Candi Milo (as Nick Dean / Britney), Megan Cavanagh (as Mrs. Neutron / Mrs. Vortex / VOX), Mark DeCarlo (as Hugh Neutron / Pilot / Arena Guard / Mr. Vortex ), Carlos Alazraqui (as Mr. Estevez), Kimberly Brooks (as Zachery / Reporter / Angie), Andrea Martin (as Ms. Winfred Fowl), Billy West (as Bobby's Twin Brother / Butch / Old Man Johnson / Robobarber), Bob Goen (as Yokian newscasters), Mary Hart (as Yokian newscasters), Dee Bradley Baker (as Norad Officer), Greg Eagles (as Mr. Folfax), David L. Lander (as Yokian Guard / Gus), Jim Cummings (as Ultra Lord / Mission Control / General Bob Keith Alcorn as Bobby / Control Yokian) |
