Cast

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)