Bertron

Bertron was a former scientist and villain of DC Comics. He was also responsible for the creation of Doomsday a hybrid monster he created after several failures. Despite his short appearance he is one of DC's most crass villains.

History
Bertron's experiences were intended to created a perfect way of life and had as a guinea pig a Krypton humanoid baby,  so the baby was taken by a hostile environment where he died then Bertron cloned the baby and took to Krypton that he died again. Every time he brought it back he made it stronger, but he had ensured that moment of his life was encoded in his genes with that Doomsday remembered every death and he was hatred of the world and life.

Evetually Bertron's mad plan succeeded and Doomsday evolved and killed several of Krypton's creatures with it soon after he was behind Bertron and killed his own creator for revenge with which he had revived several deaths when he was just a baby.

Bertron's legacy would continue as Doomsday would kill what living thing he saw ahead.