(One of my personas)

Corrin was born long ago in a realm of constant conflict and war to a tribe of barbarian people who commanded hordes of goblins and ogres leading them into battle. Corrin was the younger brother of his clans chief and often lead troops into battle, his brother was slain by the knights who lead humans, elves and dwarves into battle though. Corrin taking up his brothers mantle lead his armies with brutal efficiency even considering the weakness and roughness of his troops he managed to win battle after battle. Corrin conquered the entire continent he was from and started to build his empire intending to conquer further than that. Eventually though in a battle against a mighty hero Corrin was slain.

After being slain Corrin found himself judged before the gods of his people. He was banished from death and denied paradise for just how brutal and evil he had become. For the next thousands of years of his immortal existence he fought in different armies for different nations always trying to help as his world was in danger hoping that one day he would redeem himself in the eyes of his gods and be allowed to die. He was originally a powerful barbarian war lord who had mastered warfare but he additionally learned various weapons of the knights, samurai and other various warriors until it could be said that he was a master in every weapon every devised in his world. More than that he learned magic, and not just the basics either he became an arch mage in every school of magic he could find from fire magic to death magic and everything in between. This was still not enough as Corrin was still unable to die even as his world was destroyed, the sun had exploded and Corrin thought finally perhaps he would be allowed to die.. Instead he was transported from universe to universe with a new ability, the ability to shape shift to suit whatever position he found himself in. He found himself in situations that made no sense to him at first, he would be in a family he did not know in one universe and then suddenly be in a different universe with different rules in a different body. His powers and skills growing all the while. He was slowly but surely becoming so powerful he wondered if even should he be allowed to die if anything would be powerful enough to actually kill him.