Ao Oni

Ao Oni is a blue demon from a survival horror RPG of the same name. In the game you have to escape the mansion he lives in before he gets you. You can save your friends in some versions yet in others including the latest versions they die and turn into clones of Ao Oni.

Gameplay
Just like in the game he originated from if you touch him you die in what and he dies if you survive for long enough.