Kikou Kai Galient OVA
Japanese title: 機甲界ガリアン
Type: OVA
Episodes: 3
Source: Unknown
Genres: Action, Fantasy, Sci-Fi
Studios: Sunrise
Duration: 56 min per ep
Rating: PG-13 - Teens 13 or older

The first two episodes are summaries of the TV series, the third one (Crest of Iron) takes place in an alternate universe.