주요 캐릭터
조연 캐릭터
Reiji Kageyama조연
Tomokazu Seki일본어
Meguro Kanetake조연
Etsuko Kozakura일본어
Reiko Asagiri조연
Mayumi Iizuka일본어
Choutarou Banba조연
Takehito Koyasu일본어
Kaoru Konoe조연
Naoko Takano일본어
Fei Ling Feng조연
Chinami Nishimura일본어
Megumi Kurogane조연
Rikako Aikawa일본어
Yukino Houjou조연
Masami Suzuki일본어
Jun Thunders조연
Kikuko Inoue일본어
Jim Skylark조연
Shinichirou Miki일본어
Misao Sakimori조연
Hiroko Konishi일본어
Sayumi Ukiya조연
Chiemi Chiba일본어
기타 캐릭터
- Keiko Ochiai
Miki Nagasawa일본어 - Jun SandersKikuko Inoue일본어
- Fen Feilin / Chinami Watanabe (OVA; Gate Keeper 21)Chinami Nishimura일본어
- Saemi UkiyaChiemi Chiba
- Assistant Commander
Fumihiko Tachiki - Devil count [Both TV & OVA]
Hidekatsu Shibata - Mami Ryuukawa
Houko Kuwashima - Matsuda / Tetsuo Ikusawa
Hiroshi Naka - Masao SakimoriHiroko Konishi
- Yasutaka Fukuoka
Kaneto Shiozawa - Francine Aryumage
Junko Iwao - Teacher
Jin Yamanoi - Tokiwatari Tetsuya (Shirei)
Kinryuu Arimoto - Youko Ono
Rei Sakuma - Itou (Ep 15)
Norio Wakamoto - Machine General [Both TV & OVA: Gate Keeper 21]
Shozo Iizuka - Jum Skylark
Shin-ichiro Miki - Satoko Takanashi
Sawa Ishige - Ayako Isagai
Yuuko Sasamoto - Girl C [Ep 21]
Yuka Nishiguchi - Kazuko Ukiya
Yuriko Hishimi - Female Student A (OVA Ep 01: Gate Keeper 21]
Hiromi Konno - Female Student B (OVA Ep 01: Gate Keeper 21]Kayo Deguchi
- Miu Manadura [OVA: Gate Keeper 21]
Yukiko Hanioka - Saemi IkedaYuriko Hishima
- SpecsMelissa Charles영어
- Ms. Shimamura, Phone MessageJane Alan영어
- Narrator
Masaaki Yajima일본어