The Ryusei-Go is an upgraded version of the Graze Custom using equipment and technology from Teiwaz. As a result, it has shoulders and rear skirt armor derived from Teiwaz's Hyakuren, and although its weight increased, the new parts also grant it tougher armor and better attitude/posture control. The suit's control system has also been changed, it is now connected to the Alaya-Vijnana System, which is salvaged from a Man Rodi. This helps to make the mobile suit easier to control for its pilot, Norba Shino, who is used to the system.

The enlarged head fin, the artistic design on the head as well as the suit's unique pink coloring were all requested by Shino. He thinks they will help increase his fighting spirit, but only a few members of Tekkadan agree with him. He was also responsible for naming the suit 'Ryusei-Go'. The cash-strapped Tekkadan initially wanted to paint the entire machine in white, the cheapest Nanolaminate Armor paint. However, they were able to paint it in pink when they found red Nanolaminate Armor paint from the Brewers and combined it with their white paint.