A close-combat variant of the RGM-79C GM Type C, the GM Striker features wearable armor that protects the suit as it charges towards the enemy. The GM Striker focuses on close combat with only a standard 100mm machine gun to engage in range combat. For melee combat, it has access to a standard beam saber, a spike shield, and a long twin beam spear that was based on the RX-78-2 Gundam's beam javelin. It features improved thrusters on the legs and backpack with higher output so that it can close in onto the enemy rapidly.
A small number of GM Striker units were deployed, being mainly operated by ace pilots with high proficiency and combat experience. One unit piloted by Nemesis unit's Yuji Arcana featured performance improvements for data collection purposes. Taking advantage of his experience in boxing, Yuji defeated opponents with minimal damage in close-combat with his GM Striker. Fielded in the North American front, this particular unit earned the nickname "Zombie GM" because of how heavy the damage Zeon's MS inflicted upon it, it would still keep moving - Thanks to Yuji's unique style, that was, ignored all damage and only protected the most vital points of the MS.