This mech paper model is Chimera, a collaborative effort between the Draconis Combine, Federated Commonwealth, and Lyran Alliance, from the video game MechWarrior 4, the papercraft is created by BLaaR. The size of finished model is about 225 (H) x 173 (W) x 122 (D) mm.
Similar to the earlier Gunslinger, the Chimera was designed in the spirit of cooperation between the Combine and the Davion Federated Commonwealth in the lead-up to Operations Bulldog and Serpent. The Lyran Alliance later requested to take part, with Lyran engineers quickly beginning to dominate the entire project after Katherine Steiner-Davion took over the Regency of the Federated Commonwealth. By the time that came to pass, however, such a large amount of time and money had been invested into the project that three states had no choice but to proceed with production. When Katherine restricted production earmarked for the FedCom to units loyal to her, Theodore Kurita licensed production to Kressly Warworks to ensure more pro-Victor elements in the Armed Forces of the Federated Commonwealth could also access the design.
The Chimera is built on a Chameleon Light Endo 2 Endo Steel chassis that carries a GM 240 XL engine which provides the 'Mech with a top speed of 97.2 km/h. The Chimera's mobility is enhanced by six Rawling 40 jump jets that allow the 'Mech to jump up to one hundred and eighty meters. The Chimera is protected by seven tons of StarGuard CCM armor. [Source: sarna]
You can download the papercraft model here: MechWarrior 4 - Chimera Free Mech Paper Model Download