Recurring: Bill Pfuderer Jr. (Sewashi), D.J. Spankus (Nossori), Edwin Neal (Morimori), John Paul Shephard (Dr. Hell), Ken Webster (Professor Yumi), Lainie Frasier (Baron Ashura), Martin Burke (Shiro Kabuto), Robert Kraft (Baron Ashura)
Episodic: Brian Jepson (Tetsuya), Heather Kafka (Jun)
Additional Voices: Chilimbwe Washington, Christopher Lambert, Jason S. Perry, Jeff Catlin, Kevin Remington, Robert S. Fisher, Taylor Maddux
Recurring: Bill Pfuderer Jr. (Sewashi), D.J. Spankus (Nossori), Edwin Neal (Morimori), John Paul Shephard (Dr. Hell), Ken Webster (Professor Yumi), Lainie Frasier (Baron Ashura), Martin Burke (Shiro Kabuto), Robert Kraft (Baron Ashura)
Episodic: Arthur Ripley (Kazumasa), Brian Jepson (Tetsuya), Heather Kafka (Jun)
Additional Voices: Chilimbwe Washington, Christopher Lambert, Jason S. Perry, Jeff Catlin, Kevin Remington, Robert S. Fisher, Taylor Maddux
Recurring: Bill Pfuderer Jr. (Sewashi), D.J. Spankus (Nossori), Edwin Neal (Morimori), Jessica Smolins (Lorry, Roll), John Paul Shephard (Dr. Hell), Ken Webster (Professor Yumi), Lainie Frasier (Baron Ashura), Robert Kraft (Baron Ashura)
Episodic: Edwin Neal (Nuke), Katherine Catmull (Gamia), Matt Hislope (Mucha)
Additional Voices: Chilimbwe Washington, Christopher Lambert, Jason S. Perry, Jeff Catlin, Kevin Remington, Robert S. Fisher, Taylor Maddux
Recurring: Jessica Smolins (Lorry, Roll), John Paul Shephard (Dr. Hell), Lainie Frasier (Baron Ashura), Martin Burke (Shiro Kabuto), Robert Kraft (Baron Ashura)
Additional Voices: Chilimbwe Washington, Christopher Lambert, Jason S. Perry, Jeff Catlin, Kevin Remington, Robert S. Fisher, Taylor Maddux
Recurring: Bill Pfuderer Jr. (Sewashi), D.J. Spankus (Nossori), Edwin Neal (Morimori), Jessica Smolins (Lorry, Roll), John Paul Shephard (Dr. Hell), Ken Webster (Professor Yumi), Lainie Frasier (Baron Ashura), Martin Burke (Shiro Kabuto), Robert Kraft (Baron Ashura)
Additional Voices: Adam Sultan, Beto Rodriguez, Chilimbwe Washington, Homero Sanchez, Jason S. Perry, Jeff Catlin, Jose Brown, Monika Kappe, Nathan James, Patrick Baker-Benfield, Samantha Inoue Harte, William Gambil, William F. Gambill
Recurring: Bill Pfuderer Jr. (Sewashi), D.J. Spankus (Nossori), Edwin Neal (Morimori), Jessica Smolins (Lorry, Roll), John Paul Shephard (Dr. Hell), Ken Webster (Professor Yumi), Martin Burke (Shiro Kabuto)
Episodic: Edwin Neal (Nuke), Matt Hislope (Mucha)
Additional Voices: Adam Sultan, Beto Rodriguez, Chilimbwe Washington, Homero Sanchez, Jason S. Perry, Jeff Catlin, Jose Brown, Monika Kappe, Nathan James, Patrick Baker-Benfield, Samantha Inoue Harte, William Gambil, William F. Gambill
Recurring: Bill Pfuderer Jr. (Sewashi), D.J. Spankus (Nossori), Edwin Neal (Morimori), Jessica Smolins (Lorry, Roll), John Paul Shephard (Dr. Hell), Ken Webster (Professor Yumi), Lainie Frasier (Baron Ashura), Robert Kraft (Baron Ashura)
Episodic: Brian Jepson (Tetsuya), Edwin Neal (Nuke), Heather Kafka (Jun), Matt Hislope (Mucha)
Additional Voices: Adam Sultan, Beto Rodriguez, Chilimbwe Washington, Homero Sanchez, Jason S. Perry, Jeff Catlin, Jose Brown, Monika Kappe, Nathan James, Patrick Baker-Benfield, Samantha Inoue Harte, William Gambil, William F. Gambill
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