The Concept-X 6-1-2 Turn X (aka Turn X) is a mobile suit introduced in Turn A Gundam and is piloted by Gym Ghingham.
Excavated on the Moon's Mountain Cycle, the Concept-X 6-1-2 Turn X is the "brother" unit of the System-∀99 ∀ Gundam, and the number in its model code, "6-1-2", stands for "Project-6, Division-1, Block-2". Together with the Turn A, they are known as the "Turn-types". The Turn-types were the culmination of super-advanced technologies from the Dark History era and feature unrivaled performance among their contemporaries in the Correct Century, seemingly without comparable mobile suits even at the end of Dark History. The Turn-types are characterized by their ability to mount various weapons as well as teleport. With their performances unlocked, the Turn-types are on a different plane of existence compared to other existing mobile suits.
The Turn X has a head mounted cockpit known as the "X-Top". The "Carapace" Weapon Platform on its back holds a 3-tube missile launcher, bazooka, beam rifle and hand beam gun. Its right arm is an aggregation of various melee and ranged weaponry, including the Fusion and Crushing Manipulator, which is the Turn X's most powerful weapon.