This mech paper model is Mektek Deimos, a Clan Assault OmniMech, which was developed by Clan Snow Raven, from the video game MechWarrior 4, the papercraft is created by BLaaR. The size of finished model is about 280 (H) x 223 (W) x 223 (D) mm.
The 'Mech was first introduced during the middle of the 3060s, allegedly on the Kerensky Cluster world of Lum. However, Inner Sphere intelligence agencies stopped hearing rumors about the 'Mech during the Jihad and it faded from memory. In 3085, the Snow Ravens revealed the existence of the Deimos to the Inner Sphere. It was produced on the Clan's Inner Sphere world, Dante.
The 85-tonner is powered by a Type 255-rated Extralight Fusion Engine, which it shares with the second-line Assault 'Mech, the Omen. Fourteen Double Heat Sinks are fitted to mitigate any heat issues that the 'Mech's systems may generate. Because its top speed is slower than more typical OmniMechs of the same size, engineers installed a MASC system, which allows the Deimos to go marginally faster and keep up with comparable older designs. The 'Mech is protected by 14.5 tons of Standard Armor, where it again differs from more typical contemporaries.
When it first appeared in the Inner Sphere, the Deimos was considered the pride of the Clan and at least one was assigned to every cluster within the Snow Raven touman. [Source: sarna]
You can download the papercraft model here: MechWarrior 4 - Mektek Deimos Free Mech Paper Model Download [Skins]