In Universal Century 0083, following the Delaz Conflict by the remnants of the Principality of Zeon, the Titans, a force tasked with hunting down Zeon remnants, was formed under the leadership of Lieutenant General Jamitov Hyman. Lieutenant General Jamitov focused on developing the next-generation main mobile suit through an experimental unit commanded by his confidant, Colonel Bask.

Then, in Universal Century 0086, the RX-178-X0 Gundam MkII Prototype Unit 0 was completed as the Titans' flagship machine…

While Prototype Unit 0 possessed exceptional performance, it was too difficult for an average pilot to handle.

Therefore, Colonel Bask commissioned Zero, a genetically enhanced human from the Murasame Research Institute…

HGUC Gundam Mk-II Prototype Unit 0 version 2.0 (Complete Edition) | モトッチ's Gunpla works