Master Asia, also known as the Undefeated of the East (東方不敗), is a legendary Gundam Fighter and the main antagonist in the latter part of Mobile Fighter G Gundam (Kidou Butouden G Gundam). Piloting the GF13-001NHII Master Gundam, he is a martial arts master and former mentor to the protagonist, Domon Kasshu. Master Asia is renowned for his extraordinary combat skills, charisma, and complex motivations, making him a pivotal figure whose actions deeply influence the story's themes of rivalry, respect, and redemption.