Enzo

Sweat stood out on his forehead.
I was betting there was a gun at the small of his back.

(The Laughing Corpse, page 38, paragraph 9)

* It is possible that he picked the lock on Anita's apartment in order to let Dominga's zombies inside to kill Anita.

* While holding onto Wanda so that Anita can kill her for Dominga's human sacrifice, Anita thrusts the machette into his throat instead, making him and Bruno the sacrifices. She then proceeded to raise the entire cemetary.