His real name is Zen Shigaraki 

The antagonist of the My Hero Academia manga series. The founder and benefactor of the League of Villains.

Villain number one

He feels no emotions, viewing everything through a logical lens.
He has an obsession with his twin brother, Yoichi Shigaraki.

Would do anything just to rule the world and become in possession of One for All.

He wants to rule the world and make a perfect society, that has him as an immortal ruler of it.  