Source: hackslash.wikia.com

9. Samhain

(Hack/Slash)

Of course, couldn't talk about comic book serial killers without a good reference to Hack/Slash.

Hack/Slash followed two individuals, Cassie and Vlad, who traveled the country executing slashers, serial killers arisen from the dead to kill again. And if I'm picking one of the many slashers to make appearances, I'll go with the antihero Samhain. Sam encountered the hacky slashy duo while he was a reformed killer with no memories of his actions.

He managed to save Cassie, and asked for her help in saving his true love, Ava Park. Unfortunately, by the time he found her, Samhain had been captured and re-programmed by the mysterious Black Lamp Society, turning him back into a remorseless killing machine.

Sam spent some time with Cassie, who broke his brainwashing, but it didn't last long. On a mission to a mysterious island full of monsters, Sam's inner monster was awakened. He became Akakios, a dark, vicious killer with nothing of Sam left inside. Cassie was forced to leave Sam behind to die, although with his unique physiology, there's a very small chance he actually did"¦