Some comics transcend the genre to become something truly spectacular. Graphic literature par excellence that leaves an indelible mark on the popular consciousness for all time. It is little surprise then that one such work has furnished fans with one of the most chilling comic book villains of al time, and what’s more, this villain is all but unknown.
Source：https://www.cbr.com/batman-killing-joke-revealed-most-chilling-villain-not-joker/
