Another gunpla I got for christmas, and the latest Build Fighters type I got for a while.

First appearing in the Gundam Build Fighters special GM's Counterattack, the GM/GM is a uniquely customized version of the original GM from the original Gundam anime. The "GM" on the front of it's name refers to the organization of it's developer: the Gunpla Mafia, a gang of gunpla fighters who use gunpla for illegal purposes.

Like the mobile suit it was developed after, the GM/GM is equipped with the beam saber, the beam spray gun, and a shield.

Two of the Gunpla Mafia members, E & J, both use a GM/GM during the special: E uses a standard GM/GM, while J uses a GM/GM equipped with parts that gives it the same abilities as the Z'Gok for amphibious combat, as the GM/GM, having no particular features, allows it's members to customize them for their own purposes.

The gunpla itself has three different heads.
- The simple & trouble-free GM head.
- The "GM Command" head which has a improved sensor & communication systems, as a leader unit.
- The "D.O.M.E." head, based on the G-Bit D.O.M.E. from Gundam X, for those who are not fans of the Universal Century.