This is Big Brother, he is a character from a late 80s Chinese animation series called Calabash Brothers (aka Bottle Gourd Brothers, aka Hulu Brothers, aka Seven Brothers). The story is 13 episodes long and follows the adventures of 7 siblings who battle demons and spirits.
There are seven brothers in total, each bearing a different color of the rainbow (red, orange, yellow, green, cyan, blue, & purple), but we've only got the Big Brother papercraft which is red.
Big Brother is the oldest of the siblings, has super-strength and can grow into a giant. Fortunately for us, this paper model isn't a giant and only comes in a 3 page pattern. Created by Modelworks.cn and Cardmodel.cn