Japanese[]
- Sho Asuka (Chris): Masako Sugaya (first series), Asami Mukaidono (second series)
- Azusa Yamato (Joy)/Mrs. Asuka (Mrs. Peepers): Katsue Miwa (first series), Takako *Tsutsui (voice actress for Azusa in second series)
- Zenmaijikake (Gizmo): Hiroshi Masuoka
- Yuu (Uriah) (2nd series): Runa Akiyama
- Prof. Asuka (Prof. Peepers): Fumio Matsuoka
- Voice of God: Eiji Maruyama
English[]
- Billie Lou Watt (Christopher Peeper, Eve, Gizmo in Season 2)
- Hal Studer (Adam, Satan, additional voices)
- Helena Van Koert (Gizmo in season 1, Uri in season 2, additional voices)
- Peter Fernandez (additional voices)
- Ray Owens (Superbook, Narrator, God, Professor Fred Peeper, The Serpent, Joseph)
- Sonia Owens (Joy, Mrs. Peeper, Mary)