RX-178B Build Gundam Mk-II

Model number: RX-178B
Code name: Build Gundam Mk-II
Unit type: custom mobile suit model kit
Inspiration: RX-178 Gundam Mk-II (Zeta Gundam)
Builder: Sei Iori
Dimensions: overall height 18.5 meters
Weight: max gross 78.6 metric tons
Armor materials: plastic
Equipment and design features: hardpoint for docking with Build Booster Mk-II unit; 2 x movable shield, mounted on Build Booster Mk-II
Fixed armaments: vulcan pod, mounted on head; 2 x beam saber, stored in recharge racks on backpack, hand-carried in use; 2 x beam rifle Mk-II, can generate beam sabers, mounted on movable shields
Optional hand armaments: hyper bazooka

The RX-178B Gundam Mk-II was a custom Gunpla created by Sei Iori. It was based on the RX-178 Gundam Mk-II from the 1985-86 anime TV series Mobile Suit Zeta Gundam. The Mk-II’s design was inspired by both Sei’s own GAT-X105B/FP Build Strike Gundam Full Package and the Zeta Gundam upgrade unit FXA-05D G-Defenser. Like the G-Defenser, the Build Booster Mk-II docked with the Gunpla to increase its firepower and mobility. The Build Gundam Mk-II’s basic armaments were the same as its anime inspiration, and the Build Booster Mk-II added a pair of beam rifle Mk-IIs. Sei debuted the Build Gundam Mk-II after the Build Strike Full Package was heavily damaged in a Gunpla Battle against Tatsuya Yuuki’s MS-06R-AB Zaku Amazing. After Sei and Reiji won the 7th Gunpla Battle World Championship, the large Arista crystal underneath the PPSE stadium went out of control, causing damage in the real world. Sei used the Build Gundam Mk-II as part of a team effort to neutralize the crystal.

Pilot(s): Sei Iori, Reiji
First appearance: Gundam Build Fighters
Original mechanical designer: Kanetake Ebikawa

Beam rifle Mk-II

Head

Rear view