Debi Derryberry

as Jimmy Neutron (voice)

Rob Paulsen

as Carl Wheezer (voice)

Frank Welker

as Goddard/Poultra (voice)

Cheryl Chase

as Angelica Pickles (voice)

Daran Norris

as Cosmo (voice)

Susanne Blakeslee

as Wanda (voice)

S. Scott Bullock

as King Goobot/Elvis Ooblar (voice)

Paul Greenberg

as Ooblar (voice)

Tom Kenny

as SpongeBob SquarePants/Gary the Snail (voice)

Bill Fagerbakke

as Patrick Star (voice)

Rodger Bumpass

as Squidward Tentacles (voice)

Clancy Brown

as Mr. Krabs (voice)