- Amy Birnbaum
- Â Lucy Liberty / ... 15 episodes, 2003-2005
- Gregory Abbey
- Â Rick Wheeler / ... 15 episodes, 2003-2005
- Dan Green
- Â Dr. Stewart / ... 15 episodes, 2003-2005
- Veronica Taylor
- Â Jody Summer / ... 15 episodes, 2003-2005
- Marc Thompson
- Â Jack Levin / ... 15 episodes, 2003-2005
- Marc Diraison
- Â Dr. Clash / ... 14 episodes, 2003-2004
- Sean Schemmel
- Â Commentator / ... 12 episodes, 2003-2005
- Wayne Grayson
- Â Mr. EAD / ... 11 episodes, 2004-2005
- Jamie McGonnigal
- Â Zoda 11 episodes, 2003-2005
- David Lapkin
- Â John Tanaka 9 episodes, 2003-2005
- Andrew Rannells
- Â The Skull / ... 8 episodes, 2004
- David Wills
- Â Captain Falcon / ... 8 episodes, 2004
- Eric Stuart
- Â Octoman / ... 7 episodes, 2004-2005
- Caren Manuel
- Â Luna Ryder / ... 6 episodes, 2004
- Lisa Ortiz
- Â Lisa Brilliant / ... 1 episode, 2004
- Tara Sands
- Â Thief / ... 1 episode, 2004
- Toshiyuki Morikawa
- Â Ryu Suzaku 2 episodes, 2003-2004
- Kazuki Yao
- Â Jack Levin 2 episodes, 2003-2004
- Hideyuki Tanaka
- Â Captain Falcon 2 episodes, 2003-2004
- Ted Lewis
- Â Beravicci's Minion 2 / ... 2 episodes, 2004-2005
- Nell Balaban
- Â Kate Alen 2 episodes, 2004-2005
- Jason Griffith
- Â Bartender / ... 2 episodes, 2004
- Oliver Wyman
- Â Beravicci's Minion 3 / ... 2 episodes, 2004
- Suzanne Goldish
- Â Tim 2 episodes, 2004
- Christopher Collet
- Â Draq 1 episode, 2004
- Madeleine Blaustein
- Â Bartender / ... 1 episode, 2004
- Darren Dunstan
- Â Truman 1 episode, 2004
- Brian Maillard
- Â Roger Buster 1 episode, 2004
- Rebecca Honig
- Â Girl 1 / ... (uncredited) 1 episode, 2004
