It has been thirty two years since the Invaders have been defeated, and A.E.G.I.S is dismantled, with only a few Gate Keepers left. One of them, Ayane Isuzu learns that Machine General and Devil Count are back and they must save the Earth once more.
| Title | Gate Keepers 21 |
|---|---|
| Genres | Animation Action & Adventure Sci-Fi & Fantasy Drama |
| First Air Date | 2002-04-24 |
| Last Air Date | 2003-01-08 |
| Episode Runtime | 00 Hours 00 Minutes |
| Total Season(s) | 1 |
| Total Episode(s) on All Seasons | 6 |
| Runtime | |
| Production Companies | GONZO, KADOKAWA Shoten, Pony Canyon, IMAGICA |
