Gen is a lonely orphan boy. His sole sense of companionship comes from an imaginary friend, the god Prince Fudo-Myo. Prince Fudo-Myo comes to the boy's rescue in times of difficulty.
| Actor | Role |
|---|---|
 Toshirō MifuneFudo-Myo (Immovable Bright King) | Fudo-Myo (Immovable Bright King) |
| TToru KoyanagiGen | Gen |
| HHisako SakabeGen's sister | Gen's sister |
 Chishū RyūNot listed | Not listed |
 Nobuko OtowaNot listed | Not listed |
 Mie HamaNot listed | Not listed |
 Yōsuke NatsukiNot listed | Not listed |
 Minoru ChiakiNot listed | Not listed |
 Bokuzen HidariNot listed | Not listed |
 Yoshio KosugiNot listed | Not listed |
 Yutaka SadaNot listed | Not listed |
 Noriko SengokuNot listed | Not listed |
 Ikio SawamuraNot listed | Not listed |
 Unpei YokoyamaNot listed | Not listed |