Erwin is a vampire hunter of the best standard, discerning, intelligent, and widely respected, Erwin is an able hunter. While he cares deeply for other humans, he does not hesitate to sacrifice them for the good and prosperity of mankind if it means killing a vampire, and his fellow hunters proved more than willing to stake their lives at his order.

Erwin has cultivated a cold and flawless public persona, concealing his emotions and thoughts from the world. Very rarely does he lower his guard.