| english title | Gate Keepers 21 |
| original title | ゲートキーパーズ21 |
| year | 2002 |
| country | Japan |
| director | YAMAGUCHI Hiroshi | |
| composer | TANAKA Kohei | |
| animation director | GOTOH Keiji | |
| artistic director | KIKUCHI Masanori | |
| mecha designer | KAWAHARA Tomohiro | |
| IHARA Toshiaki |
| duration | 6 OAV x30mn |
| animation studio | Gonzo |
