One of the G-Series and a transformable mobile suit built by the Amerian Army based on their Hermes Rose blueprints. Due to a difference in technological capabilities, the G-Arcane is an inferior replication of the blueprints. As a result, the Amerian Army only applies the photon frame to the head unit instead of the whole body. As a result, it is incompatible with most of the equipment packs developed by the Amerian Army. Despite this, the G-Arcane is still a high performance mobile suit, and the skirt-like booster on its hip is capable of sustained atmospheric flight and can transform to increase its speed.
After the Megafauna's trip to the Venus Globe, the G-Arcane is upgraded with the Full Dress equipment using VGMM-Gb03 Gaeon's spare parts taken from the G-IT Laboratory. The Full Dress equipment replaces the booster with a large battery pack and a set of binders. Photon balancers are also attached to the G-Arcane's head.