At an unknown point in time, the damaged Gundam Kimaris Trooper was brought to the Outer Lunar Orbit Joint Fleet (aka Arianrhod Fleet) and under the orders of Rustal Elion, it was overhauled into the Gundam Vidar for Vidar's use. During the overhaul, the damaged parts of the Gundam Frame were replaced with new parts produced using the current technology. As part of the overhaul process, the mobile suit first became the ASW-G-XK XK to test its systems, before it achieved its current final form. Overall, the suit spent a long time undergoing maintenance and adjustment, and only Rustal and a few others in the Arianhod Fleet were aware of its existence.
The cockpit structure of the Gundam Vidar has the characteristics of Gjallarhorn's mobile suits, and does not contain the connectors for the Alaya-Vijnana system. Instead, it is fitted with a pseudo Alaya-Vijnana system, the Alaya-Vijnana Type E, which has the same strength as the original but without the risk.[5] Details of this system are only known by some of those in charge of the suit's development.