Makoto Tsumura

as Atom Tetsuwan (voice)

as Takato Matsuda (voice)(1 ep)

as Yoshito Sakai (voice)(49 eps)

as Tomekichi(26 eps)

as Astro Boy/Atom (voice)

as Shoukichi HItotsubashi (voice)(12 eps)

as Captain Blue Jr. (voice)(51 eps)

as Shōgo Ushiyama (voice)(13 eps)

as Young Bell (voice)

as Ai (voice)(2 eps)

as Gonyonyo (voice)

as Ryouta (voice)(30 eps)

as Atom (voice)(50 eps)

as Takato Matsuda (voice)

as Kimihiro Tsutsui (voice)(75 eps)

as Takato Matsuda (voice)

as Yayoi Momodou (voice)(1 ep)

as Takato Matsuda (voice)(51 eps)

as Reo Kakinoki (voice)(19 eps)

as Hotaru-chan (voice) / Miki-chan (voice)

as Takako Kedoin (voice)(48 eps)

as Takichi (voice)

as Brat A

as Gaki A

as Nello (voice)

as Amano (voice)(51 eps)

as Marisa (voice)(3 eps)

as Wakame (voice)(2650 eps)