This paper model is MegaGargomon, a Machine Digimon whose Japanese name and design are derived from the St. Bernard dog breed and "Gargomon", and whose English name is derived from "Mega Gargomon", based on the anime, manga and video games series Digimon, the papercraft is created by joshua1533.
It is a super-gigantic Digimon whose whole body has become a mass of weapons. The amount of weapons it has equipped rivals that of MetalGarurumon. Each of its weapons, such as its lasers, missiles, bazookas, vulcans, and flamethrowers, are concealed. Although its speed is considerably slow, because it puts all of that energy into power, it possesses unbelievable destructive force. Because its lack of speed is compensated for by its weapons, it is able to cope with attacks from every direction without moving even a little. Its ears bear the Zero Unit. [Source: wikia]