It was confirmed today via Twitter's co-founder and Creative Director of NetherRealm Studios, Ed Boon, another playable character in Injustice: Gods Among US.
Now instead of Doomsday will join the list of playable characters in Injustice: Gods Among US. He is a villain (a major) of DC Comics, and became world famous after being responsible for the death of Superman.
Doomsday born several experiments fairs by an alien scientist on Krypton, give birth your hatred for Superman. It started long before the humanoid master race Krypton, this was a planet filled with ferocious monsters where only the strongest survived. One day a scientist had the idea to throw a baby out of the secure perimeter, and as was expected the monsters killed, the scientist then used a machine to collect the remains of the baby's DNA.