- Grey Griffin
- Â Mandy / ... 4 episodes, 2004-2005
- Keone Young
- Â Kaz Harada 2 episodes, 2004-2005
- Greg Eagles
- Â Grim 2 episodes, 2004-2005
- Richard Steven Horvitz
- Â Billy 1 episode, 2004
- Scott Menville
- Â Robin 1 episode, 2004
- Ben Diskin
- Â Numbuh One 1 episode, 2004
- Tom Kane
- Â Professor Utonium 1 episode, 2004
- Matt Hill
- Â Ed 1 episode, 2004
- Candi Milo
- Â Dexter 1 episode, 2004
- Janice Kawaye
- Â Ami Onuki / ... 1 episode, 2004
- Daevyd Avalon
- Â Jonny 2x4 1 episode, 2005
- Lara Jill Miller
- Â Juniper Lee 1 episode, 2005
- Cathy Cavadini
- Â Blossom 1 episode, 2005
- Alexander Polinsky
- Â Dennis Lee 1 episode, 2005
- Tara Strong
- Â Ben Tennyson / ... unknown episodes
- Frank Welker
- Â Fred Jones / ... unknown episodes
- Steve Blum
- Â Heatblast / ... unknown episodes
- Phil LaMarr
- Â Jack / ... unknown episodes
- Vanessa Marshall
- Â Irwin unknown episodes
- Charlie Adler
- Â I.R. Baboon unknown episodes
- Bob Bergen
- Â The Eager Young Space Cadet unknown episodes
- Roger Jackson
- Â Mojo Jojo unknown episodes
- Keith Ferguson
- Â Bloo unknown episodes
- Joe Alaskey
- Â Duck Dodgers unknown episodes
- Jennifer Martin
- Â Ms. Sara Bellum unknown episodes
