1969. Strange invaders threaten Japan's recovery from the devastation of World War II with a shocking form of guerilla warfare. Fortunately, a new type of hero has been discovered among the teenage population of Japan - The GateKeepers! Able to channel "gates" to other dimensions, this new generation of heroes is the only thing standing between the Earth and total annihilation!
- Official Trailer Description from Pioneer
| Original Idea and Story Concept: | Hiroshi Yamaguchi |
| General Director: | Junichi Satou |
| Director: | Kouichi Chiaki |
| Art Director: | Masanori Kikuchi |
| Director of Photography: | Ryou Fukushi |
| Scientific Design: | Masahiro Maeda |
| Character Design: | Keiji Goto |
| Sound Director: | Youta Tsuruoka |
| Music: | Kouhei Tanaka |
| Animation Production: | GONZO |
| Shun Ukiya: | Takahiro Sakurai |
| Ruriko Ikusawa: | Ayako Kawasumi |
| Reiko Asagiri: | Mayumi Iizuka |
| Kaoru Konoe: | Kaoru Takano |
| Feng Fei Ling: | Chinami Nishimura |
| Yukino Houjou: | Masami Suzuki |
| Tyoutarou Banba: | Taketo Koyasu |
| Megane: | Kozakura Etsuko |
| Shirei (Commander): | Kinryuu Arimoto |
| Keiko Ochiai: | Miki Nagasawa |
| Reiji Kageyama: | Tomokazu Seki |
| Count Devil: | Shouzou Iizuka |
| General Machine: | Hidekatsu Shibata |
