The RX-178 Gundam Mk-II is a prototype mobile suit featured in the anime series 'Mobile Suit Zeta Gundam' (Kidou Senshi Z Gundam). Initially developed by the Titans, an elite Earth Federation force, the Mk-II is later captured and utilized by the AEUG (Anti Earth Union Group). Renowned for its advanced design and versatility, the Gundam Mk-II plays a significant role in the series, piloted by main characters such as Kamille Bidan during critical battles against the Titans, symbolizing the AEUG’s resistance.