The XGF-02 Gundam Lfrith, also known as LF-03, made it debut in the Mobile Suit Gundam the Witch from Mercury PROLOGUE series. Under the skilled command of pilot Elnora Samaya during the Vanadis Incident, this mobile suit showcased its prowess on the battlefield.

Developed by the Ochs Earth Corporation, a pioneering company rooted on Earth, the Gundam Lfrith introduced cutting-edge technology known as the GUND Format. This revolutionary innovation, grounded in artificial limb welfare engineering, endowed the mobile suit with unparalleled capabilities. The integration of the GUND Format marked the birth of a new breed of mobile suits, aptly named GUND-ARMs. Widely recognized as "GUNDAMs," these mobile suits transcended traditional boundaries, gaining cross-disciplinary fighting abilities and capturing the imagination of people worldwide.