Freddy Krueger
Freddy Krueger isn't just a killer -- he's also an entertainer. His blend of comedy and atrocity are reflected in his name. Dominated by the number 3, the name Freddy Kruger indicates a happy-go-lucky type with a creative streak and a wicked sense of humor.

Nothing makes Freddy happier than killing -- and the longer he can drag it out, and the more gruesome and twisted ways he can think to torture his victims before putting them out of their misery, the better. He's also a big proponent of the one-liner, like telling a victim, "You've got the body, I've got the brains!" right before slicing his own skull open.

Michael Myers
Like Norman Bates, Michael Myers' name is dominated by the number 5. The difference is that Michael Myers has all of the alpha characteristics of his dominant number and none of the ones that made Norman Bates create his own evil alter ego. Mikey never thought twice about escaping the mental institution (and killing everyone in his path along the way). It's also the number of a survivor, and everyone who ever tried to stop Michael Myers learned that the hard way. Number 5 people also have killer reflexes (no pun intended) and sharp intuition -- must-have traits for a serial killer on the run.

Jason Voorhees
When Jason Voorhees first killed, he didn't do so out of a sociopathic need to spill blood. He did it to avenge his mother's death. The name Jason Voorhees is dominated by the number 4, making him family-oriented. It's an odd trait for a cold-blooded killer, sure, but it makes sense when you look at where his killer instinct came from. It's also a number of rigidity and intolerance. He may have been a murderer, but he held his teenage victims to a higher moral code, killing them for engaging in what he considered promiscuous activity.