Gate Keepers 21 (2002)
| First Air Date: | 2002, April 24 |
| Last Air Date: | 2003, January 8 |
| Status: | Ended |
| Seasons: | 1 |
| Episodes: | 6 |
| Episode Runtime: | 26 min |
Overview:
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.