Doomsday is the only one in main comics continuity to ever kill Superman; and he did so simply by beating the man of steel to death. ... Superman has encountered him on numerous occasions since. In the animated universe, Doomsday was a clone, made on Earth; he battled Superman, but never successfully killed him.

Is doomsday more powerful than Superman?

When it comes to pure power – something that includes strength, agility, and all the accompanying tools – Doomsday's resistance is simply too astounding to enable Superman to do any lasting damage. This leaves us with the clear winner in Doomsday. At least Superman has the Justice League to help him out.

Who can kill Doomsday?

Hyperion could easily take down Doomsday because he has shown feats not even Superman has been able to do. Once he stopped two planets from colliding and survived being sandwiched between two massive celestial objects.