Mader is trying to unify the land of Asato using giant robots. A legend says that a champion, the giant of Iron, will come to destroy all lesser armour. Mader's ambitious son Hai tries to kill him and his other children, Hai's own brother Jordy and little sister Chururu, wanting no question as to the succession.
Unfortunately the movie Panzer World Galient is not yet available on HBO Max.
| Crew | Ryosuke Takahashi | Creator |
| Writing | Yoshitake Suzuki | Screenplay |
| Directing | Ryosuke Takahashi | Director |
| Writing | Masashi Ikeda | Storyboard |
| Writing | Jinzo Toriumi | Screenplay |
| Sound | Toru Fuyuki | Music |
| Writing | Ryosuke Takahashi | Original Story |
| Visual Effects | Atsushi Yano | Key Animation |
| Writing | Soji Yoshikawa | Screenplay |
