- Laura Bailey
- Â Marlene Angel 26 episodes, 1999-2000
- Eric Vale
- Â Yuji Kaido 26 episodes, 1999-2000
- Houko Kuwashima
- Â Marlene Angel 26 episodes, 1999-2000
- Kenji Nojima
- Â Yuji Kaido 26 episodes, 1999-2000
- Tomohisa Asô
- Â Medical Doctor 26 episodes, 1999-2000
- Kyle Hebert
- Â Seno Miyagi / ... 16 episodes, 1999-2000
- Meredith McCoy
- Â Su / ... 12 episodes, 1999-2000
- John Burgmeier
- Â Joey Heald / ... 11 episodes, 1999-2000
- Christopher Sabat
- Â Additional Voices / ... 10 episodes, 1999-2000
- Sean Schemmel
- Â Rick 10 episodes, 2000
- Jerry Jewell
- Â Tony Frost 9 episodes, 2000
- Bradford Jackson
- Â Additional Voices / ... 8 episodes, 1999-2000
- Carol Hope
- Â Brenda / ... 8 episodes, 1999-2000
- Lisa Ortiz
- Â Alicia Whistle 8 episodes, 2000
- Chris Cason
- Â Additional Voices / ... 7 episodes, 1999-2000
- Dameon Clarke
- Â Dice Quaid / ... 6 episodes, 1999-2000
- Sonny Strait
- Â Additional Voices / ... 6 episodes, 1999-2000
- Kent Williams
- Â Additional Voices / ... 6 episodes, 1999-2000
- Brice Armstrong
- Â Chairman Victor / ... 6 episodes, 1999-2000
- Wendy Powell
- Â Additional Voices / ... 6 episodes, 1999-2000
- Rick Robertson
- Â Additional Voices 6 episodes, 1999-2000
- Roger Jones
- Â Additional Voices 6 episodes, 1999-2000
- Yukitoshi Hori
- Â Robert 6 episodes, 1999
- Ned Record
- Â Additional Voices / ... 5 episodes, 1999-2000
- Chris Rager
- Â Additional Voices 4 episodes, 1999-2000
- Brandi Ray
- Â Yung / ... 4 episodes, 1999-2000
- Chad Cline
- Â Additional Voices / ... 4 episodes, 1999
- Masatake Ginga
- Â Dice Quaid 3 episodes, 1999
- Justin Cook
- Â Additional Voices / ... 3 episodes, 1999-2000
- Mike McFarland
- Â Additional Voices / ... 3 episodes, 1999-2000
- Chuck Huber
- Â Seamus Han / ... 3 episodes, 1999
- Clint Ford
- Â Soldier #1 / ... 3 episodes, 1999
- Jeremy Inman
- Â Additional Voices 3 episodes, 2000
- Sean Whitley
- Â Additional Voices 3 episodes, 2000
- Chinami Nishimura
- Â Elena 2 episodes, 1999
- James Fields
- Â Commander 2 episodes, 1999
- Kasey Buckley
- Â Elena 2 episodes, 1999
- Carlos Moreno
- Â Additional Voices 2 episodes, 1999
- Mark Orvik
- Â Additional Voices 2 episodes, 1999
- Mitsuru Hanada
- Â Seamus Han 2 episodes, 1999
- Megan Woodall
- Â Minh 2 episodes, 1999
- Stephanie Nadolny
- Â Additional Voices 2 episodes, 2000
- Josh Martin
- Â Additional Voices 2 episodes, 2000
- Ryan Thomas Brockington
- Â Additional Voices 2 episodes, 2000
- Chris Forbis
- Â Additional Voices 2 episodes, 2000
- Steve Sanders
- Â Additional Voices 2 episodes, 2000
- Willie Ray Jr.
- Â Ben 2 episodes, 2000
- Christopher Bevins
- Â Radio Voice 1 episode, 1999
- Duncan Brannan
- Â Man #1 1 episode, 1999
- Evan Jones
- Â Additional Voices 1 episode, 1999
- Lane Pianta
- Â Additional Voices 1 episode, 1999
- Scott Sager
- Â Additional Voices 1 episode, 1999
- Paul LeBlanc
- Â Additional Voices 1 episode, 2000
- Amanda Menix
- Â Additional Voices 1 episode, 2000
- Joshua Huber
- Â Additional Voices 1 episode, 2000
- Brendan Guy
- Â Additional Voices 1 episode, 2000
- Jeff Munsterman
- Â Additional Voices 1 episode, 2000
- Stacie Jolley
- Â Additional Voices 1 episode, 2000
- Kôji Ishii
- Â Elena's father unknown episodes
- Masaharu Satô
- Â Victor unknown episodes
- Katsunosuke Hori
- Â Seno unknown episodes
- Shunsuke Shima
- Â Doug unknown episodes
- Jin Domon
- Â Operator unknown episodes
- Hiroaki Yoshida
- Â Kyzyl Kum Guard leader unknown episodes
- Junko Hagimori
- Â Ruu Sue unknown episodes
- Naoki Kinoshita
- Â Gernreich unknown episodes
- Hiromi Nishikawa
- Â Minh unknown episodes
- Tetsuo Kaneo
- Â Baikonur leader unknown episodes
- Chizu Yonemoto
- Â Amick Hendar boy, Handaru Aamikku unknown episodes