The Adventures of Jimmy Neutron: Boy Genius

Jimmy Neutron (voice) (76 episodes)

Sheen Estevez (voice) (76 episodes)

Carl Wheezer (voice) (76 episodes)

Cindy Vortex (voice) (63 episodes) / Cindy Vortex / Tina Sue (voice) (4 episodes) / Cindy Vortex / Phantom #2 (voice) (1 episode) / Cindy Vortex / Yuri (voice) (1 episode)

Goddard / Special Vocal Effects (voice) (47 episodes) / Goddard / Phantom #4 / Special Vocal Effects (voice) (5 episodes) / Special Vocal Effects (voice) (3 episodes) / Goddard / Tubbs / Special Vocal Effects (voice) (2 episodes) / Goddard / Tubbs / Health Inspector / Special Vocal Effects (voice) (1 episode) / Goddard / Wendel / Special Vocal Effects (voice) (1 episode) / Goddard / Mr. Wuggles / Special Vocal Effects (voice) (1 episode) / Goddard / Tubbs / Father / Special Vocal Effects (voice) (1 episode) / Goddard / Mr. Strych / Special Vocal Effects (voice) (1 episode) / Tubbs / Special Vocal Effects (voice) (1 episode) / Goddard / Second Guard / Special Vocal Effects (voice) (1 episode)

Libby Folfax (voice) (37 episodes) / Libby Folfax / Chuck (voice) (10 episodes) / Libby Folfax / Ike (voice) (5 episodes) / Libby Folfax / Libby's Mom (voice) (3 episodes) / Libby Folfax / Maggie (voice) (3 episodes) / Libby Folfax / Student #2 (voice) (1 episode) / Libby Folfax / Ozzie (voice) (1 episode) / Libby Folfax / Chicks (voice) (1 episode) / Libby Folfax / Phantom #2 (voice) (1 episode) / Libby Folfax / Libby's Brother (voice) (1 episode)

Hugh Neutron (voice) (43 episodes) / Hugh Neutron / General / Alien Man / Emergency System / Gleason Like Creature (voice) (4 episodes) / Hugh Neutron / Man (voice) (2 episodes) / Hugh Neutron / Commercial Narrator (voice) (2 episodes) / Hugh Neutron / Mr. Vortex (voice) (1 episode) / Hugh Neutron / Flippy (voice) (1 episode) / Hugh Neutron / Instructor (voice) (1 episode) / Hugh Neutron / Octopus Man (voice) (1 episode) / Hugh Neutron / Announcer (voice) (1 episode) / Hugh Neutron / TV Announcer (voice) (1 episode) / Hugh Neutron / Jenson / Skeezicks (voice) (1 episode) / Hugh Neutron / Clerk (voice) (1 episode) / Hugh Neutron / Eddie / Newt / Gomer (voice) (1 episode)

Judy Neutron (voice) (25 episodes) / Judy Neutron / Mrs. Vortex (voice) (7 episodes) / Judy Neutron / Woman (voice) (6 episodes) / Judy Neutron / Crowd Member #2 (voice) (2 episodes) / Judy Neutron / Vox (voice) (2 episodes) / Judy Neutron / Hilgo (voice) (1 episode) / Martian #2 (voice) (1 episode) / Judy Neutron / Mrs. Vortex / Aunt Suzy (voice) (1 episode) / Judy Neutron / Mrs. Pizza Monster (voice) (1 episode) / Mrs. Vortex / Vox (voice) (1 episode) / Judy Neutron / Phantom #3 (voice) (1 episode) / Judy Neutron / Mrs. Moran (voice) (1 episode) / Vox (voice) (1 episode) / Judy Neutron / Masseuse / MaternoTron (voice) (1 episode) / Judy Neutron / Girl (voice) (1 episode) / Judy Neutron / Old Lady Nusbaum (voice) (1 episode) / Judy Neutron / Lunch Lady (voice) (1 episode) / Judy Neutron / Gretchen (voice) (1 episode)

Ms. Fowl (voice) (44 episodes) / Ms. Fowl / Lady (voice) (1 episode)

Nick Dean (voice) (17 episodes) / Nick Dean / Britney (voice) (1 episode) / Female Fish (voice) (1 episode) / Nick Dean / Germy (voice) (1 episode) / Nick Dean / Amber (voice) (1 episode) / Britney (voice) (1 episode) / Nick Dean / Phantom #1 (voice) (1 episode) / Nick Dean / Ignishka (voice) (1 episode) / Nick Dean / Terry (voice) (1 episode)

Sam Melnick (voice) (9 episodes) / Sam Melnick / Corky Shimatzu (voice) (2 episodes) / Sam Melnick / Man (voice) (2 episodes) / Sam Melnick / Lance (voice) (1 episode) / Blix (voice) (1 episode) / TV Newscaster / Lucky Joe (voice) (1 episode) / Sam Melnick / Blix (voice) (1 episode) / Sam Melnick / Lou / Reporter (voice) (1 episode) / Corky Shimatzu (voice) (1 episode) / Sam Melnick / Pilot (voice) (1 episode) / Corky Shimatzu / Larry Llama (voice) (1 episode) / Sam Melnick / Corky Shimatzu / Kid (voice) (1 episode) / Sam Melnick / Corky Shimatzu / Lars (voice) (1 episode)