The twisted world of "American Horror Story" has made it difficult for audiences to sleep going on four seasons now, and even though it shocks the living daylights out of us, we just can't get enough. The tangled, psychotic, bloody web the anthology series has weaved has been chock full of all kinds of unhinged, murdery characters. Some of their complex stories make way for a glimmer of our sympathy, while others are just downright coldblooded, bone-chilling killers.

From "Murder House" to "Freak Show," here are some of the most terrifying beings to ever come out of "American Horror Story," ranked by their ability to pretty much scare the crap out of us.