4. Jason X (Jason X)
Jason Voorhees was something of a minor brick even when he was a human. Then, when he was resurrected as a zombie-like being, he became even stronger (being able to decapitate a young boxer with a single punch) and more durable (shrugging off injuries that would kill ordinary human beings). But when he was brought back to life, after being killed in his zombie-like form, by a spaceship's futuristic medical station using nanotechnology, he was rebuilt as an even more powerful cyborg. He went on to display strength that allowed him to punch the head off an android and punch through the hull of the spaceship he was on, as well as an increase in durability that allowed him to survive re-entry. Given that he's an insane killer - particularly with this massive upgrade in strength and durability - he's one character you definitely wouldn't want to encounter, let alone be specifically targeted by.