Cletus Kasady (Earth-1811)

Cletus Kasady is a notorious serial killer also known as The Carnage Killer.

Early Years And Escape From Ravencroft
Cletus Kasady had a troubled childhood. He killed his grandmother by pushing her down a flight of stairs, and tortured his mother's dog. At the age of 18 Cletus murdered his parents, he was then sent to Ravencroft Institute where he stayed for a year until he broke out.

Since then Cletus has been committing multiple murders and leaving his initials on the murder scene.