GAT-X105B/CM Build Strike Gundam Cosmos


Model number: GAT-X105B/CM
Code name: Build Strike Gundam Cosmos
Unit type: custom mobile suit model kit
Inspiration: GAT-X105 Strike Gundam (Gundam SEED)
Builder: Sei Iori
Dimensions: overall height 17.7 meters
Weight: unknown
Armor materials: plastic
Equipment and design features: Radial General (RG) Purpose System; Absorb Field
Fixed armaments: 4 x vulcan gun, mounted in head; 2 x beam saber, stored in recharge rack on waist armor, hand-carried in use; 2 x beam cannon, mounted on backpack
Optional hand armaments: beam rifle; shield, mounted on left forearm

The GAT-X105B/CM Build Strike Gundam Cosmos was an upgraded version of Sei Iori’s GAT-X105B/ST Star Build Strike Gundam. Its appearance was unchanged from the Star Build Strike, but Sei made improvements to the Gunpla’s construction and to its Radial General (RG) Purpose System, which powered up the unit through manipulation of Plavsky particles. The Build Strike Cosmos also utilized an Absorb Field that could absorb enemy beam attacks. The Build Strike Cosmos served as Sei’s personal unit in the 8th Gunpla Battle World Championship and in subsequent competitions. Just before an exhibition match at the new Yajima Stadium, the Build Strike Cosmos was stolen by the Gunpla Mafia, which set a trap for Sei and his friends inside the stadium. The Build Strike Cosmos was used in battle by Gunpla Mafia leader Mikio Mashita, forcing Sei to fight against his own Gunpla with the new SB-011 Star Burning Gundam. After the battle, Sei and Reiji used the Build Strike Cosmos and Star Burning to have a Gunpla Battle they had long promised each other. Sei later upgraded the Build Strike Cosmos into the GAT-X105B/GC Build Strike Galaxy Cosmos.

Pilot(s): Sei Iori, Mikio Mashita
First appearance: Gundam Build Fighters
Original mechanical designer: Kunio Okawara


Beam rifle






Rear view (Mobile suit)


Rear view (Universe Booster)



Build Fighters Info

Kenji Nagasaki

Yousuke Kuroda

Mechanical Designer(s):
Kunio Okawara
Kanetake Ebikawa
Junya Ishigaki
Junichi Akutsu
Kenji Teraoka

Character Designer(s):
Kenichi Ohnuki
Suzuhito Yasuda

Musical Composer:
Yuuki Hayashi

Japan 10.07.2013 – 03.31.2014
Streaming 10.07.2013 – 03.31.2014


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