This gundam paper model is a BG-011B Build Burning Gundam, a mobile suit from the anime series Gundam Build Fighters Try, built by Sei Iori and piloted by Sekai Kamiki, the papercraft is created by Celvin Dian Pratama, he also created a GAT-X207 Blitz Gundam Paper Model.
The Build Burning Gundam is a Gunpla designed for melee combat, its movement and mobility have been noted to be similar to that of GAT-X105B/ST Star Build Strike Gundam, and this is not surprising as it is built by Sei Iori who had used an earlier version of the suit in the 11th Gunpla Battle World Championship. Due to its combat specialization, Sekai Kamiki can use the Gunpla and perform his Jigen Haoh School's style of martial arts without any problem. Although the unit itself has no shield, it can use its elbow armor to protect itself against physical projectiles and this is known as 'pinpoint shield defense'. Unlike standard Gunpla, the Build Burning's propulsion system do not produce any flame effects when activated, instead it emits Plavsky Particles. The Build Burning can be equipped with parts from SD-237 Winning Gundam to form a large fist known as 'Winning Knuckle', increasing the power of its punch. The same effect can also be achieved through equipping the Winning Gundam's Core Fighter.
When the fighter is exceptionally determined, the Plavsky Particles within the light blue parts of Build Burning's body turn a red-gold shade, as do the emitted Plavsky Particles, in a manner highly similar to an activated Arista. In this state the Build Burning emits fire effects from its back and around its limbs when attacking, as well as changing the color of Sekai's Jigen Haoh techniques from green to red. Much more importantly, however, this state appears to cause the Build Burning to reflect damage onto the fighter controlling it.
The Build Burning Gundam was originally built by Sei Iori for the 11th Gunpla Battle World Championship. After the Championship, he improved the suit into its current form, disguised it as a Dom, and hid it inside the Gunpla Battle World Championship trophy he won with Reiji.
The Build Burning Gundam in its Dom disguise was later accidentally discovered by novice fighter Sekai Kamiki, when he was examining the trophy. He then used it to fight in a Gunpla battle against Plastic Model Club president Daiki Miyaga. After defeating Miyaga in battle, Sekai's Dom was sniped by Yuuma Kousaka's Lightning Gundam, who after several shots hits and apparently destroys the Dom. To everyone's surprise, the Build Burning Gundam emerges from the wreckage of the Dom and closes the distance against the Lightning Gundam using its superior mobility and defense.
The Build Burning Gundam was heavily damaged during it's fight against Shimon, who was almost an equal match for Sekai, despite using a straight-assembled Destiny Gundam. However, as the model damage was set to B, the Gunpla did not sustain much actual damage. [Source: wikia]
You can download this gundam paper model here: