Full Cast - Gate Keepers 21 (OVA) (episodes 1 to 6)
- 1. Encounter
Recurring: Jake Martin (Inspector Daisuke Hashimoto)
Episodic: Abe Lasser (Teacher), Jane Alan (Frightened Girl), Jim Taggert (Miu's Date, Officer Kimura), Michelle Ruff (Classmate 2)
- 2. Mad Dash
Recurring: Jake Martin (Inspector Daisuke Hashimoto)
Episodic: Abe Lasser (Kaiser Kikai), Jim Taggert (Officer Kimura), Lynn Fischer (PA Recording), Ron Allen (Dispatcher)
- 3. Late Summer
Episodic: Abe Lasser (Taxi Driver), Jane Alan (Voice Mail, Saemi Ikeda), Michelle Ruff (Holly, Karaoke Cashier), Ron Allen (HIT Movie Monster), Ruby Marlowe (HIT Movie Goddess)
Additional Voices: Michelle Ruff, Ruby Marlowe
- 4. Ayane
Recurring: Jake Martin (Inspector Daisuke Hashimoto)
Episodic: Jim Taggert (Yoshiho Yamata, Student), Michael McConnohie (Teacher, Count Akuma), Ruby Marlowe (Reporter)
Additional Voices: Michelle Ruff, Ruby Marlowe
- 5. Miu
Recurring: Jake Martin (Inspector Daisuke Hashimoto)
Episodic: Jim Taggert (Student)
- 6. Sound of Feathers
Recurring: Jake Martin (Inspector Daisuke Hashimoto)
Episodic: Jim Taggert (Shun Ukiya)