Model number: RX-274R
Code name: Gundam Mark IV “Siren”
Unit type: prototype transformable mobile suit
Accommodation: pilot only, in panoramic monitor cockpit in torso
Dimensions: overall height 28.4 meters, head height 20.7 meters
Weight: maximum weight 90.3 metric tons, empty weight 51.3 metric tons
Armor materials: gundarium alloy on moveable frame
Powerplant: Minovsky-type ultracompact fusion reactor, output rated at 4200 kW
Equipment and design features: sensors, range 16200 meters; transformation system
Fixed armaments: 2 x scattering mega particle cannon, mounted in boost binders; 2 x 60mm vulcan gun, fire-linked, mounted in head, operable in mobile suit mode only; 2 x beam saber, stored in recharge racks in shoulder binders, hand-carried in use
Optional fixed armaments: 2 x 2-tube grenade launcher, mounted on arms, 18 round magazine, spare magazines can be stored in shoulder binders; 2 x shield, replaces shoulder binders, each mounts beam cannon
Optional hand armaments: cavalier rifle, powered by replaceable energy pack, 28 shot charge, spare energy packs can be stored in shoulder binders; “knuckle buster” beam machine gun/beam sword, powered by replaceable energy pack, 35 shot charge, spare energy packs can be stored in shoulder binders

EUNI Assessment: Prototype attack unit designed by the U.N.T. Spacy during the Second Space War era and built off of the PMX-000 Messala’s transformation system. Possesses exceptional speed while in mobile armor mode, and is an excellent all-around combatant in mobile suit configuration. Rapid fuel consumption is offset by large propellant tanks in the boost binders.   Threat Level: Moderate