Christopher Sean

Ken Sato / Ultraman (voice)

Gedde Watanabe

Professor Sato / Ultradad (voice)

Tamlyn Tomita

Mina / Emiko Sato (voice)

Keone Young

Dr. Onda (voice)

Frank Buckley

Announcer / Additional Voices (voice)

François Chau

Itow-san / Additional Voices (voice)

Artt Butler

Coach Shimura / Additional Voices (voice)

Mayumi Yoshida

TV Reporter (voice)

Julia Kato

Umpire #3 (voice)

Brittany Ishibashi

Mrs. Onda / Additional Voices (voice)

Lee Shorten

Captain Aoshima (voice)

Jonathan Groff

Bunny (Ollie) (voice)

Masa Kanome

Umpire #4 (voice)

Vic Chao

Additional Voices (voice)

Paul Nakauchi

Additional Voices (voice)