Names：

Gundam Mk-II

（Titans Colors）（RX-178）
Status： MS of Titans
Tags： Mobile SuitPrototypeGundam SeriseTitans ForcesAnaheim Electronics
Painting： (A.E.U.G Colors)
Development： BarzamPrototype Psycho GundamGundam Mk-IIIHuckebeinHazel (Prototype 0)
Strengthen： (Mask Commander)
Control： Jerid Messa
Original Design： Gien GundamDark Tsubad (Mask Commander)Dark Knight Gundam Mark IIKuro Henpuku
World： the World of Mobile Soldiers
Works： Mobile Suit Z GundamUniversal Century Series
LeveL： A

Three RX-178 Gundam Mk-II units were developed by the Titans in December, U.C. 0086. When word of these three prototypes reached the Anti-Earth Union Group, Quattro Bajeena led a team which infiltrated the Titans' Green Noa 1 space colony. With the help of a young boy, Kamille Bidan, son of the Gundam Mk-II's principal designer Franklin Bidan, Quattro's team stole all three mobile suits.

Following the theft of the Gundams, two were sent to Anaheim Electronics to be dismantled and studied, while the AEUG kept the last one in its service, and repainted in a navy blue-on-white color-scheme. The Gundam Mk-II was piloted by many of the AEUG's best pilots, including the rookie pilot Kamille, and the defected Titans officer Emma Sheen after the former moved to the Zeta Gundam. Due to being an experimental unit meant to test the effectiveness of the moveable frame, the Gundam Mk-II was soon outclassed by the Titans' new and transformable mobile suits, though it still participated in many of the AEUG's most important missions, such as the Second Battle of Jaburo, or the Battle of New Hong Kong against the MRX-009 Psycho Gundam.

Three RX-178 Gundam Mk-II units were developed by the Titans in December, U.C. 0086. When word of these three prototypes reached the Anti-Earth Union Group, Quattro Bajeena led a team which infiltrated the Titans' Green Noa 1 space colony. With the help of a young boy, Kamille Bidan, son of the Gundam Mk-II's principal designer Franklin Bidan, Quattro's team stole all three mobile suits.

Following the theft of the Gundams, two were sent to Anaheim Electronics to be dismantled and studied, while the AEUG kept the last one in its service, and repainted in a navy blue-on-white color-scheme. The Gundam Mk-II was piloted by many of the AEUG's best pilots, including the rookie pilot Kamille, and the defected Titans officer Emma Sheen after the former moved to the Zeta Gundam. Due to being an experimental unit meant to test the effectiveness of the moveable frame, the Gundam Mk-II was soon outclassed by the Titans' new and transformable mobile suits, though it still participated in many of the AEUG's most important missions, such as the Second Battle of Jaburo, or the Battle of New Hong Kong against the MRX-009 Psycho Gundam.