In 1990, Bandai released the four-episode OVA series SD Gundam Gaiden. Directed by Tetsuro Amino (known for Macross 7 and SD Gundam's Counterattack), the series takes place in the medieval fantasy realm of Suda Doaka. It once again features popular Gundam characters like Amuro Ray and Char Aznable, alongside fantasy-inspired versions of famous mobile suits. In this series, the heroic Knight Gundam and his allies must defend Suda Doaka against the threats posed by Satan Gundam and Sieg Zeon. A significant portion of the story unfolds in the Kingdom of Lacroa, a setting that appears in several other SD productions, including the 2003 TV series SD Gundam Force.