• 
  Yu Asakawa

  Priss Asagiri
• 
  Hilary Haag

  Nene Romanova
• 
  Kiyoyuki Yanada

  Leon McNichol
• 
  Hiroko Konishi

  Nene Romanova
• 
  Kelly Manison

  Linna Yamazaki
• 
  Daiki Nakamura

  Brian J. Mason
• 
  Rio Natsuki

  Linna Yamazaki
• 
  William Ross

   Interviewer, Sewer Crew 1 (26 episodes, 1998-1999)

• 
  Satsuki Yukino

  Sylia Stingray
• 
  Christine M. Auten

  Priss S. Asagiri (English Dub)
• 
  Adriana Pissardini

  26 episodes, 1998-1999
• 
  Kira Vincent-Davis

  Young Galatea
• 
  Laura Chapman

  Sylia
• 
  Jason Douglas

  Leon
• 
  Jay Hickman

  Additional Voices

• 
  Chris Patton

  Daley
• 
  Matt Greenfield

  Additional Voices
• 
  Carol Matthews

  Additional Voices
• 
  Doug Smith

  Additional Voices
• 
  John Swasey

  Quincy