Eventually Simon transforms from a scared and confused creature with a childlike mentality into a powerful and confident supernatural being with a laundry list of vaguely defined occult superpowers, many of which are only used once.

He is resistant to damage (bullets hurt but don't seem to seriously impair him), extremely strong, can read minds, pasts and futures by touching people and can change his appearance (or at least his face) to hide his scarred face.

Once, he uses a magical rock like a floating high speed weapon, slamming through enemies like a bullet under his mental direction.

Apparently, he can also bring dead people back to life by sacrificing some of the 20 souls that constitute him.

He also becomes the magical overseer of Gotham (confusingly called The Mayor), who controls the flow of supernatural creatures into the city.