NoFix "The King of Spin"

About

An insane and sadistic Dokeshi who works for the Masked Assembly because they allow him to run wild. Known as the "King of Spin", Nofix has the power to manipulate rotational energy, allowing him to stop bullets by spinning them in the opposite direction and enhancing his body's natural healing process by spinning his own cells among other things.

His daily condition is unknown as he's never shown doing or speaking about it. Besides his crazy and bloodthirsty nature, Nofix's also completely and utterly obsessed with Yohei, having a sexual (and perhaps even romantic) attraction to him, so much so that he's vowed to murder anyone and everyone who he associates with.

(Source: Soul Eaterpedia)