Yuichi Nakamura

as Tatsuya Shiba (voice)

Saori Hayami

as Miyuki Shiba (voice)

Yumi Uchiyama

as Erika Chiba (voice)

Takuma Terashima

as Leonhard Saijou (voice)

Satomi Sato

as Mizuki Shibata (voice)

Atsushi Tamaru

as Mikihiko Yoshida (voice)

Sora Amamiya

as Mitsui Honoka (voice)

Yuiko Tatsumi

as Shizuku Kitayama (voice)

Kana Hanazawa

as Mayumi Saegusa (voice)

Marina Inoue

as Mari Watanabe (voice)

Junichi Suwabe

as Katsuto Juumonji (voice)

Yoko Hikasa

as Angelina Kudou Shields (voice)

Konomi Kohara

as Kokoa / Shia Watatsumi (voice)

Jin Yamanoi

as Benjamin Canopus (voice)

Satoshi Hino

as Ralph Algol (voice)

Masaki Aizawa

as Ralph Hardy Mirphak (voice)

Seiichiro Yamashita

as Saburou Date (voice)

Yoshito Yasuhara

as Takao Kanemaru (voice)

Toru Okawa

as Harunobu Kazama (voice)

Chisa Yuuki

as Chieri Kurosawa (voice)

Hiroe Oka

as Meiko Morinaga (voice)

Tarusuke Shingaki

as Shigeru Sanada (voice)

Chie Horikoshi

as Sylvia Mercury First

Akeno Watanabe

as Nazuna Takeuchi (voice)

Yasuhiro Mamiya

as Minamitate Island Commander (voice)

Daichi Hayashi

as Researcher (voice)

Toshifumi Nakabayashi

as Researcher (voice)

Hidenori Takahashi

as Researcher (voice)

Itaru Yamamoto

as Researcher (voice)

Masamichi Kitada

as Supervisor (voice)