Mercurius OZ-13MSX2 is a mobile suit from the anime series 'Shin Kidou Senki Gundam Wing' (Mobile Suit Gundam Wing). Piloted primarily by Heero Yuy and later by other characters, Mercurius is notable for its defensive capabilities, featuring the Planet Defenser, an energy shield system. The suit was developed by the Romefeller Foundation alongside its counterpart, Vayeate, and plays a crucial role in several battles throughout the series. Its design and technology represent significant advancements in the Gundam universe.