This mech paper model is Mauler, a 90-ton assault 'Mech from the video game MechWarrior 4, the papercraft is created by Shiftdel, skins by Sturm, and the scale is in 1:40. The size of finishedmodel is about 306 (H) x 206 (W) x 171 (D) mm.
The Mauler is based on the DCMS-MX90-D Dabokuwhich was first deployed along the Draconis Combine border as early as 3038 in selected DCMS units and codenamed Mauler by Federated Commonwealth forces when first encountered. Because the Daboku turned out a design failure suffering from crippling construction flaws, Luthien Armor Works shelved the Daboku and later adopted the FedCom codename Mauler for its redesigned successor in order to avoid the stigma associated with the earlier shameful failure, effectively treating the Mauler as an entirely new, distinct 'Mech.
Thus, references to the Mauler pre-dating 3050 usually refer to the Daboku, an outwardly similar but technichnically substantially different predecessor design. [Source: sarna]
You can download the papercraft model here: MechWarrior 4 - Mauler Free Assault Mech Paper Model Download [Skins 1] [Skins 2]