Midnight Lantern says:
"Carnage + Joker = The end of the world."
Damn, you beat me to that one. What would his name be, though?
Meanwhile, I always thought Batman and Daredevil should have been amalgamated. Bruce Murdock, blinded by the criminal who killed his parents, also develops super hearing and an ability to echolocate like a bat! "Criminals are a cowardly and superstitious lot. Therefore, I will craft myself into . . . the Bat-Devil!"