Ultraman Gaia

Art Director

• 
  Uchida Tetsuya

Assistant Director

• 
  Oka Hideki

Composer

• 
  Sahashi Toshihiko

Director

• 
  Yagi Takeshi
• 
  Nemoto Miki
• 
  Ichino Ryuichi

Narrator

• 
  Isobe Hiroshi

Screenwriter

• 
  Konaka Chiaki
• 
  Hasegawa Keiichi
• 
  Ota Ai
• 
  Takegami Junki
• 
  Migita Masakazu
• 
  Konuta Kenji
• 
  Yoshida Shin

Main Role

• 
  Yoshioka Takeshi

  Takayama Gamu

  Main Role
• 
  Takano Hassei

  Fujimiya Hiroya

  Main Role

Support Role

• 
  Watanabe Hiroyuki

  Ishimuro Akio

  Support Role
• 
  Hiraizumi Sei

  Chiba Tatsumi

  Support Role
• 
  Ukaji Takashi

  Tsutsumi Seiichiro

  Support Role
• 
  Hashimoto Ai

  Sasaki Atsuko

  Support Role
• 
  Maria Theresa Gow

  Georgie Leland

  Support Role
• 
  Nakagami Masami

  Kajio Katsumi

  Support Role
• 
  Shiotani Shogo

  Hayashi Koichi

  Support Role
• 
  Ishikawa Shin

  Tsukamori Toru

  Support Role
• 
  Kawashima Tomoko

  Inagi Miho

  Support Role
• 
  Ishibashi Kei

  Tadano Kei

  Support Role
• 
  Matsuda Masaru

  Yoshida Satoru

  Support Role
• 
  Kaizu Ryosuke

  Higuchi

  Support Role
• 
  Ishii Hiroshi

  Senuma Ryuichi

  Support Role
• 
  Hamada Mitsuo

  Ranbashi Kosuke

  Support Role
• 
  Kuno Makiko

  Inamori Kyoko

  Support Role
• 
  Otakara Tomoko

  Kuroda Megumi

  Support Role
• 
  Tsuburaya Hiroshi

  Tabata Kenji

  Support Role
• 
  Tsunoda Eisuke

  Inoue Michifumi

  Support Role
• 
  Kagami Masashi

  Nakaji

  Support Role
• 
  Mizusawa Aki

  Takayama Shigemi

  Support Role
• 
  Yamamoto Sen

  Takayama Yuichi

  Support Role

Guest Role

• 
  Ozawa Zo

  [Prime Minister] (Ep. 1-2)

  Guest Role
• 
  Komiya Takayasu

  Hirakawa (Ep. 9)

  Guest Role
• 
  Shindachiya Kei

  Nishitani (Ep. 9)

  Guest Role
• 
  Nikamoto Tatsumi

  Horie [Drunk] (Ep. 15) | [Former military executive] (Ep. 39)

  Guest Role
• 
  Fujita Sokyu

  Dr. Tsuda (Ep. 20)

  Guest Role
• 
  Migita Masakazu

  Sugai Yuichi (Ep. 20, 37)

  Guest Role
• 
  Izumi Chinu

  [Hiroki's mother] (Ep. 22)

  Guest Role
• 
  Shimomura Akihiro

  [Secretary] (Ep. 22)

  Guest Role
• 
  Henmi Tsutomu

  (Ep. 22)

  Guest Role
• 
  Oyama Yutaka

  Takenaka Tokuzo (Ep. 28)

  Guest Role
• 
  Fuwa Mansaku

  Nagata (Ep. 29)

  Guest Role
• 
  Terajima Susumu

  Shoji Teruo (Ep. 29)

  Guest Role
• 
  Machida Masanori

  [Chief of Rakuda Express] (Ep. 29)

  Guest Role
• 
  Ota Ai

  [Oden stall customer] (Ep. 29)

  Guest Role
• 
  Suzuki Hiromi

  [Hiromi's mother] (Ep. 31)

  Guest Role
• 
  Patrick Harlan

  Alf Mackay (Ep. 33)

  Guest Role
• 
  Tsumura Takashi

  Dr. Kyogoku (Ep. 35)

  Guest Role
• 
  Kawahara Sabu

  [President] (Ep. 35)

  Guest Role
• 
  Ayata Toshiki

  Yabuno (Ep. 35)

  Guest Role
• 
  Yamato Takeshi

  Hiiragi Hiroyuki (Ep. 38, 45, 50)

  Guest Role
• 
  Takeuchi Toru

  Hirano [Old man] (Ep. 39)

  Guest Role
• 
  Tatsuma Shin

  Tanimoto Akira (Ep. 44)

  Guest Role
• 
  Imada Koji

  Imada (Ep. 46)

  Guest Role
• 
  Kawata Hiroki

  [Believer] (Ep.46)

  Guest Role
• 
  Gori

  [Believer] (Ep.46)

  Guest Role
• 
  Ueto Aya

  [Believer] (Ep.46)

  Guest Role
• 
  Bibiru Oki

  [Believer] (Ep.46)

  Guest Role
• 
  Horiuchi Masami

  [Deathbringer] (Ep. 47-48)

  Guest Role
• 
  Kubozono Junichi

  [Man in special news program] (Ep. 48)

  Guest Role
• 
  Nishikawa Reimon

  [KCB announcer] (Ep. 49)

  Guest Role
• 
  Akaboshi Shoichiro

  [Geo Base's executive] (Ep. 50)

  Guest Role

Voice Actor

• 
  Isobe Hiroshi

  [GUARD member] (Ep. 10)

  Voice Actor