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)