Full cast - Giant Robo: The Animation (OVA) (episodes 1 to 7)

• 1. The Black Attache Case

  Recurring: Lex Woutas (Lord Alberto), Marc Thompson (Taisou), Mike Pollock (Professor Shizuma), Sean Schemmel (Tetsugyu), Skip Greenpoint (Narrator), Zachary Alexander (Professor Vogler)

  Episodic: Christopher Nicholas (BF Tech, Expert Tech), Marc Thompson (Professor Duncan), Sean Elias Reyes (BF Tech, Expert Tech), Wayne Grayson (Ivan), Zen Mansley (Professor Simule, Q Boss)

  Additional Voices: Chris Kimball, Fred Chagan, Joe Chagan, Matt Holz, Nick Loscalzo

• 2. The Tragedy of Bashtarle

  Recurring: Erica Schroeder (Youshi), Lex Woutas (Lord Alberto), Marc Thompson (Taisou), Sean Schemmel (Tetsugyu), Skip Greenpoint (Narrator), Zachary Alexander (Professor Vogler)

  Episodic: Christopher Nicholas (BF Tech, Expert Tech), Marc Thompson (Professor Duncan), Sean Elias Reyes (BF Tech, Expert Tech), Wayne Grayson (Ivan), Zen Mansley (Professor Simule)

  Additional Voices: Chris Kimball, Fred Chagan, Joe Chagan, Matt Holz, Nick Loscalzo

• 3. The Electromagnetic Net Operation

  Recurring: Erica Schroeder (Youshi), Lex Woutas (Lord Alberto), Marc Thompson (Taisou), Sean Schemmel (Tetsugyu), Skip Greenpoint (Narrator), Zachary Alexander (Professor Vogler)

  Episodic: Wayne Grayson (Ivan)

• 4. Twilight of the Heroes

  Recurring: Erica Schroeder (Youshi), Lex Woutas (Lord Alberto), Marc Thompson (Taisou), Sean Schemmel (Tetsugyu), Skip Greenpoint (Narrator), Zachary Alexander (Professor Vogler)

• 5. The Truth of Bashtarle

  Recurring: Lex Woutas (Lord Alberto), Mike Pollock (Professor Shizuma), Sean Schemmel (Tetsugyu), Skip Greenpoint (Narrator), Zachary Alexander (Professor Vogler)

  Episodic: David Moo (Kaei), Ed Paul (Shutsu, Kaiho, Professor Kusama), Maddie Blaustein (Koshin), Marc Thompson (Professor Duncan), Wayne Grayson (Cervantes), Zen Mansley (Professor Simule)

• 6. Crime and Punishment

  Recurring: Skip Greenpoint (Narrator), Zachary Alexander (Professor Vogler)

  Episodic: Chris Kromer (Fitzkarald), Dan Green (Young Emmanuel), David Moo (Kaei), Ed Paul (Kaiho), Eric Stuart (Hanzui), Eva Christensen (Sunny the Magician), Maddie Blaustein (Koshin), Mike Pollock (Jujoji), Richard Springle (Kawarazaki), Robert O'Gorman (Yuuki), Vic Mignogna (Zangetsu)

• 7. The Grand Finale

  Recurring: Erica Schroeder (Youshi), Lex Woutas (Lord Alberto), Marc Thompson (Taisou), Mike Pollock (Professor Shizuma), Sean Schemmel (Tetsugyu), Skip Greenpoint (Narrator), Zachary Alexander (Professor Vogler)

  Episodic: Chris Kromer (Fitzkarald), Dan Green (Young Emmanuel), David Moo (Kaei), Ed Paul (Shutsu, Kaiho, Professor Kusama), Eric Stuart (Hanzui), Maddie Blaustein (Koshin), Richard Springle (Kawarazaki)