(in credits order)
- Sôma Saitô(voice)
- Ken'ichi Suzumura(voice) (as Kenichi Suzumura)
- Shizuka Itô(voice)
- Daigo Naito(voice) (as Daigo)
Rest of cast listed alphabetically
- J. David Brimmer(English version) (voice) (as Michael Alston Baley)
- Tyler Bunch(English version) (voice) (as H.D. Quinn)
- Christine Marie Cabanos(English version) (voice)
- Brandon Engman(English version) (voice)
- Doug Erholtz(English version) (voice)
- Erin Fitzgerald(English version) (voice)
- Barbara Goodson(English version) (voice)
- Wayne Grayson(English version) (voice)
- Jason Griffith(English version) (voice)
- Kyle Hebert(English version) (voice)
- Steve Kramer(English version) (voice)
- Dave B. Mitchell(English version) (voice) (as Raymond K. Essel)
- Joe Ochman(English version) (voice) (as Joseph Whimms)
- Lisa Ortiz(English version) (voice)
- Mike Pollock(English version) (voice)
- Steve Prince(English version) (voice) (as Derek Stephen Prince)
- Michael Allan Schneider(English version) (voice) (as Michael Schneider)
- Erica Schroeder(English version) (voice)
- Stephanie Sheh(English version) (voice)
- Jason Simon(English version) (voice)
- Michael Sinterniklaas(English version) (voice)
- Michael Sorich(English version) (voice)
- Doug Stone(English version) (voice)
- David Vincent(English version) (voice) (as David Thompson)
