XM-X1 (F97) Crossbone Gundam X-1 Kai

Model number(s): XM-X1 (Crossbone Vanguard); F97 (Strategic Naval Research Institute
Code name: Crossbone Gundam X-1 Kai
Unit type: prototype general purpose mobile suit
Manufacturer: SNRI
Operator: Crossbone Vanguard
First deployment: UC 0133
Accommodation: pilot only, in panoramic monitor/linear seat cockpit in torso with Core Block System using Core Fighter
Dimensions: head height 15.9 meters
Weight: empty 9.5 metric tons; max gross 24.8 metric tons
Armor materials: gundarium alloy/ceramic composite
Powerplant: Minovsky type ultracompact fusion reactor, output rated at 5280 kW
Propulsion: rocket thrusters: 4 x 25000-30000 kg; vernier thrusters/apogee motors: 34
Performance: maximum thruster acceleration 4.03-4.84 G
Equipment and design features: sensors, range unknown; dummy launchers in hands; special weapons targeting sensor in head, can be deployed over right eye sensor/camera; bio-computer system
Optional equipment: anti-beam coating cloak, mounts on main body; booster, mounts on X-thrusters
Fixed armaments: 2 x vulcan gun, fire-linked, mounted in head; 2 x mega machine cannon, fire-linked, mounted in torso; 2 x beam saber, stored in recharge racks in shoulder armor, hand-carried in use; 4 x heat dagger, stored one in each foot and one in each calf, hand-carried or foot-mounted in use; 2 x scissor anchor, mounted on front skirt armor; 2 x screw whip, mounted in rear skirt armor, hand-carried in use; 2 x beam shield/brand marker, mounted on forearms
Optional hand armaments: buster gun, can be stored on right hip armor; beam zanber, can be stored on left hip armor; zanbuster, combined buster gun/beam zanber
Optional armaments: rifle grenade, fired from buster gun; atomic shell, fired from buster gun

One of the Crossbone Vanguard's flagship mobile suits, the XM-X1 Crossbone Gundam X-1 is in need of major repair after combat with the Jupiter Empire's Death Gale Team. The melee-focused Gundam is unable to get through the EMS-VSX1 Quavarze's snake hands and ends up losing both arms, among other damages. While repairing the Gundam, the Crossbone Vanguard's engineers decide to give it a slight increase in its short-range combat abilities. The only major change to the X-1 Kai is the addition of a pair of screw whips, which mount miniature drills on their tips. With this new weapon, Kincado Nau (aka Seabook Arno) is able to fight off the Death Gale Team. However, after being forced into extended combat with the Earth Federation Forces, Kincado is attacked by his former ally, Zabine Chareux. Already damaged from fighting the mass-produced Gundam F91 units, the X-1 Kai is outmatched by Zabine's XM-X2 Crossbone Gundam X-2 Kai, who apparently kills Kincado by stabbing the X-1 Kai's cockpit with a beam saber before kicking it into Earth's atmosphere. Several months later, however, the X-1 Kai reappears just in time to help Tobia Arronax's XM-X3 Crossbone Gundam X-3 fight off the Death Gale Team on Earth. After meeting up with his friends, Kincado returns to the battlefield, using the X-1 Kai to destroy the Jupitris 9 and deal the final blow to the real Crux Dogatie's EMA-10 Divinidad. As the Jupiter Conflict comes to an end, Kincado retires to marry Berah Ronah (aka Cecily Fairchild), leaving the X-1 Kai in Tobia's hands. In the time between the conflict's end and the rise of the new Crossbone Vanguard, the X-1 Kai is upgraded again, this time into the infamous Skull Heart.

Pilot: Kincado Nau (aka Seabook Arno)
Appearances: Mobile Suit Crossbone Gundam; Mobile Suit Gundam: Extreme Vs.
Original mechanical designer: Hajime Katoki

Beam zanber
Brand marker
Buster gun
Core Fighter
Scissor anchor
Screw whips
Zanbuster