The GATX102 Duel Gundam is a mobile suit introduced in the anime Mobile Suit Gundam SEED. It was piloted by Yzak Joule.


The Duel Gundam is the first unit to be developed in the Earth Alliance's G Project series of prototype MS. Equipped with the new Phase Shift armor that makes it nearly impervious to most physical weapons, the Duel is designed as a generalpurpose machine that has wellbalanced performance, and also serves as a development base for the other MS in the project.

The Duel's armament consists of two headmounted "Igelstellung" 75mm multibarrel CIWS guns, which later become standard weaponry on most Earth Alliance's suits to intercept incoming missiles and closing in enemy units, two beam sabers stored on the backpack and handcarried for use in close combat, a 57mm Highenergy Beam Rifle with an attached 175mm grenade launcher for ranged combat, and an antibeam coated shield for defense. Duel also has a Rail Bazooka as an optional weapon, but it was taken and used by MBFP01 Gundam Astray Gold Frame to escape from Heliopolis.

After being stolen by ZAFT and damaged in battle with the GATX105+AQM/EX01 Aile Strike Gundam, the suit is upgraded with the Assault Shroud. The Assault Shroud is a set of ejectable armor mounted on the Duel’s body to enhance overall combat performance. It adds a "Shiva" 115mm railgun to the right shoulder and a 220mm 5barrel missile pod to the left shoulder for additional firepower, as well as various leg and backpackmounted thrusters for better mobility. Although the equipment worked well in space, it performs poorly under gravity due to its bulk.

Assault Shroud
A ZAFT manufactured addon, built for the Duel after it was damaged in combat. It is based on similar equipment used by the ZGMF1017AS GINN Assault Type and the ZGMF515AS CGUE Assault. The Assault Shroud increases the Duel's battle effectiveness by granting it extra armor and new weapons like the "Shiva" Railgun and a Missile Pod. It also contains additional vernier thrusters to enhance Duel's mobility in space and offset some of the added weight. However, the latter is effective only in space and the extra bulk still hinders the Duel's movement when under gravity. Additionally, the Duel's Phase Shift Armor does not extend to the Assault Shroud. If a lethal or heavily damaging strike is suffered, the Assault Shroud can be ejected, and the Duel can still fight using its basic form and weaponry.