Mobile Suit Gundam Silhouette Formula 91

Mobile Suit Gundam Silhouette Formula 91 (機動戦士ガンダム シルエットフォーミュラ91) is a Universal Century side story set around U.C. 0123, near the era of Mobile Suit Gundam F91. The story focuses on Anaheim Electronics’ secret Silhouette Formula Project, a programme that attempted to reproduce and study technologies connected to the Formula Project and the compact mobile suits of the late Universal Century.

The series is notable for machines such as the RXF-91 Silhouette Gundam and related test units, which visually echo the Gundam F91 while reflecting Anaheim’s own development approach. It sits in the background of the conflict between the Earth Federation, Crossbone Vanguard and competing mobile suit manufacturers, making it useful for understanding the technological transition from large Universal Century machines to smaller, high-performance late-UC mobile suits.