Doomsday was artificially created in the distant past on
Krypton, long before the humanoid Kryptonian race had gained dominance over the planet; in this time period, Krypton was a violent, hellish world where only the absolute strongest of creatures could survive (at the time, the world's dominant lifeforms were said to be the most dangerous creatures in the universe). Doomsday's creator was a mysterious alien named
Bertron, who wished to create the ultimate lifeform. To do so, Bertron and his team sent a baby onto the surface of the planet, where it would be instantly killed by the harsh environment or the vicious creatures inhabiting it. Each time, whatever of the lifeform's remains that survived were harvested and used again, to create a better, stronger version than the previous. In short, the mad scientist was using the method of
cloning to accelerate the
evolution of the being he was creating. Through decades of this process, the being who would eventually become Doomsday was forced to endure the agony of death, thousands upon thousands of times; the memory of these countless deaths was
recorded in his genes and drove it to hate all life. Eventually, Doomsday gained the ability to evolve against what killed him in his prior life without the need of Bertron's technology. At this point he proceeded to hunt down and kill all of the lethal creatures that inhabited Krypton. Bertron himself met his death at the hands of his own creation. Doomsday escaped Krypton and went on a killing spree across several planets, eventually coming to Calaton, where he was defeated by the energy being,
The Radiant. In common Calatonian burial procedures, Doomsday's body was shackled and masked, and due to his status as a murderer, was shot into space. Eventually, he would land on Earth, the force of the impact of his landing driving the casket deep underground. Doomsday, however, was not dead, as any time he would be "killed", he would return evolved past whatever defeated him.
Yes maybe he had the upper hand in alot of those BUT his opponents wanted to continue
