The 0 Gundam, officially designated GN-000 0 Gundam (Type A.C.D.), is a prototype mobile suit in the anime series 'Kidou Senshi Gundam 00' (Mobile Suit Gundam 00). As the first Gundam constructed by Celestial Being, it serves as the technological foundation for all subsequent Gundams in the series. The 0 Gundam plays a vital role in the story’s background and is piloted by Ribbons Almark and later by Lasse Aeon. Its legacy shapes the future of the Gundam Meisters.