• 
  David Hayter

  Hiroshi Ozora
• 
  Dougray Scott

  Voci adiţionale
• 
  Bryan Cranston

  (voce, engleză)
• 
  Dorothy Elias-Fahn

  Vivien (English version)
• 
  Wendee Lee

  Elizabeth (4-6) (English version)
• 
  Melissa Fahn

  Mao Shirase
• 
  Jôji Yanami

  Professor Amagi
• 
  Kikuko Inoue

  Brooke

• 
  Toshiyuki Morikawa

  Oozora Hiroshi
• 
  Yukana Nogami

  Oozora Mirai
• 
  Joe Romersa

  Voci adiţionale
• 
  Joshua Seth

  Nozomu Ozora
• 
  Jane Alan

  Brooke (English version)
• 
  Yuri Amano

  Jennifer
• 
  Rica Matsumoto

  Oozora Nozomu

• 
  Kumiko Nishihara

  Vivien
• 
  Steve Blum

  Kaoru Masaki
• 
  Akiko Hiramatsu

  Shirase Mao

• 
  Yasuhiro Irie

  animation department
• 
  Jirô Kanai

  animation department