The year is 2050 and an energy crisis is Earth's main concern. A brilliant scientist in Trinity City develops the Trinity energy, a new source of energy powerful enough to supply the entire world. The alien empire of the Elda learn of this energy and plot to seize it by force. They attack Earth's space colony on Jupiter's moon of Io and occupy it. Meanwhile, the Trinity energy has been applied to three giant robots that combine to form God Sigma, a mighty robot led by martial artist-turned-pilot Dantou Shiya. With its mighty sword, it now stands between the peace of Earth and the power of the Elda forces.
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Toshiya Dan
MAIN
Kei Tomiyama
Japanese
Julie Noguchi
MAIN
Yoshito Yasuhara
Japanese
Kira Kensaku
MAIN
Tesshou Genda
Japanese
Teral Soushirei
MAIN
Noriko Ohara
Japanese
Minako Martino
MAIN
Rihoko Yoshida
Japanese
Sachi
SUPPORTING
Reiko Katsura
Japanese
Kazami Hakase
SUPPORTING
Kousei Tomita
Japanese
Reets Shirei
SUPPORTING
Shouzou Iizuka
Japanese
Rie Kasuga
SUPPORTING
Kumiko Takizawa
Japanese
Zilla
SUPPORTING
Rihoko Yoshida
Japanese
Shouta Kasuga
SUPPORTING
Noriko Ohara
Japanese
Gagan
SUPPORTING
Mikio Terashima
Japanese
Martino
SUPPORTING
Kenichi Ogata
Japanese
Dalton
SUPPORTING
Yuusaku Yara
Japanese
Mesa
SUPPORTING
Keaton Yamada
Japanese
Narrator
BACKGROUND
