Arthur's Super Transformation

Toshiya Fiji

Gaku Hoshikawa

Kei Shindachiya

Ken Hoshikawa

Ryohei Kobayashi

Fumiya Hoshikawa

Kazuko Miyata

Kazumi Hoshikawa

Ryo Narushima

Remi Hoshikawa

Motoko Watanabe

Zaza

Rica Matsumoto

Arthur G6 (voice)

Takeshi Ishikawa

Captain Garoa

Osamu Kato

Dongoros (voice)

Hatsue Nishi

Doldora

Chika Matsui

Medou

Shunsaku Kudo

Billion

Eiichi Onoda

Narrator

Atsuo Mori

Denki Unagin (voice)

Hirofumi Taga

Taro Yukawa

Kosuke Uchino

Boy