The development of the Geminass Unit 2 was mostly in parallel with the Unit 1. It was identical to its brother unit aside from its color scheme: since Geminass 02 was intended for space-use, it adopted a deep blue color scheme for reduced visibility in space. It was deployed for actual combat earlier than the Geminass 01, and since it was piloted by the more experienced Odel Bernett, it was able to activate the PX System earlier than its brother unit as well. Like Unit 1, its model number was changed after MO-V aligned itself with OZ.
In AC 195, five teenaged boys use Gundam mobile suits to wage a guerilla war against OZ and their oppression of the space colonies. Far removed from this conflict, new Gundam type mobile suits are being secretly constructed at the mobile suit factory asteroid MO-V. Developed by Dr. Berg, the OZX-GU01A Gundam Geminass 01 and OZX-GU02A Gundam Geminass 02 represent a change in mobile design philosophy. The Geminass 02 is assigned to Odel Bernett, the older brother of rookie pilot Odin. Although Odel performs well and is able to use the PX system, his Geminass 02 is damaged in battle and captured by OZ Prize.