He's been watered down a little in the years which have followed, but when Doomsday was first introduced in the pages of Superman, he was a truly terrifying beast. Even more powerful than the Man of Steel, their epic battle raged across the whole of Metropolis, and only ended when they both delivered a killing blow to the other. As a result, Doomsday stands out as the only villain to have actually killed Superman, and that has cemented his place in comic book history as not necessarily the all-time greatest, but certainly the most memorable. Now, he's set to make his presence felt on the big screen in Batman v Superman: Dawn of Justice.
