Kosei Tomita

Shunsaku Ban (voice)

Nachi Nozawa

Black Jack (voice)

Mari Shimizu

Astro Boy as "Adam" (voice)

Hisashi Katsuta

Professor Ochanomizu as "Dr. Narzenkopf" (voice)

Yoshiko Ohta

Princess Sapphire as "The Empress of the Mu Empire" (voice)

Chikao Ohtsuka

Duke Red as "Director Credit" (voice)

Kaneta Kimotsuki

Hosuke Sharaku (voice)

Mami Koyama

Chocola as "Milly" (voice)

Koji Yada

Skunk Kusai (voice)

Kenji Utsumi

Acetylene Lamp (voice)

Masashi Amenomori

Boon Marukubi (voice)

Mina Tominaga

Pinoco (voice)