I'm Submarine Robo

Sayaka Aida

Taiyo Ozora (voice)

Naomi Shindo

Arias 'Ace' Hono (voice)

Chihiro Kusaka

Kai Kitazawa / Makoto Aikawa (voice)

Kumiko Higa

Rin Haruka / Shō Ashikawa (voice)

Michael Shitanda

Susumu Utada / Tsuyoshi Utada (voice)

Yukana

Alice Beckham / Marie Bito (voice)

Akiko Kimura

Sayuri Suizenji (voice)

Risa Hayamizu

Daichi Hayami (voice)

Megumi Matsumoto

Ken Minami (voice)

Hisafumi Oda

Jay (voice)

Tanuki Sugino

Musashi Miyajima

Ryotaro Okiayu

Kohshiro Sasaki (voice)

Kazuhiro Nakata

Brad Bito / Kaiser-G (voice)

Naoki Yanagi

Bone (voice)

Kazuma Horie

Tōru Suidobashi (voice)