SD Gundam Gaiden is an OVA from the SD Gundam series, a sub-franchise of the Gundam

Gundam

The is a metaseries of anime created by Sunrise studios that features giant robots called "Mobile Suits" ; usually the protagonist's MS will carry the name Gundam....

 anime

Anime

is the Japanese abbreviated pronunciation of "animation". The definition sometimes changes depending on the context. In English-speaking countries, the term most commonly refers to Japanese animated cartoons....

franchise released in 1990.

Plot

The story is set in the mystical land of Lacroa, where humans and robot knights live together. The main character is Knight Gundam, a noble warrior with no memory of his past. Knight Gundam clashes many times with the evil Satan Gundam. Knight Gundam ultimately learns that his amnesia is due to himself and Satan Gundam originally having been a single Gundam before splitting in two.