Joneus (Joe), a new Ultraman from U-40, merges with young Science Garrison member Chôichirô Hikari to defend the Earth in the first animated Ultra Series entry.

Kei Tomiyamaas Chôichirô Hikari (voice)
Masatô Ibuas Ultraman Joneus (voice)
Sumi Shimamotoas Mutsumi Hoshikawa (voice)
Hidekatsu Shibataas Commander Daisuke Gondô (voice)
Masaya Niheias Hiroaki Tobe (voice)
Junpei Takiguchias Pigu (voice)
Shigeru Chibaas Monki (voice)
Kazuo Kumakuraas Professor Henry Nishiki (voice)
Soji Yoshikawa
Toru Fuyuki
Kunio Miyauchi