This papercraft is Ostarion the Skeleton King, a powerful melee strength hero, capable of taking plenty of damage before dying, based on the DotA 2 multiplayer online battle video game, the paper model was created by Israel Flores, shared by Kang Papercraft.
Skeleton King's ultimate allows him to rise again, acting like an Aegis of the Immortal, making him especially difficult to kill. He also has a nuke that deals reliable damage and stun, and he is able to stay in his lane longer because of his passive lifesteal aura. He can become a hard carry in later stages of game depending on his farm. [Source: GamePedia]
You can download this papercraft template here: DotA 2 - Ostarion the Skeleton King Free Papercraft Download