The name's origin is inspired by the "Kai" in "Gundam Delta Kai." "Kai" is written as the Greek letter "χ (chi)," and its shape resembles the letter "X (X)," leading to the interpretation of "X (Cross)." Furthermore, the idea of ​​incorporating it into the lineage of the Z Gundam, a symbolic transformable mobile suit, led to the name "Z-X (Zeta Cross)," a combination of "Z (Zeta)" and "X (Cross)."

Model Number: MSZ-006-X
Fixed Armament: 60mm Vulcan Cannon x2, Beam Saber x2, Twin Grenade Launcher

Z-X improved version with funnels (arm modifications, marking stickers applied) | Zail's Gunpla works