The day came when Izaya the Inheritor grew weary of the endless war that killed his people and slowly burnt New Genesis into a wasteland. He cast off his armor and weapons, and sought a new path free of the cycle of bloodshed. Encountering the Source itself, he returned from his soul searching reborn as Highfather.
I knew going in what I wanted to do with Highfather. I am pretty pleased with how he turned out. The only thing I really added was scars on his face and fingers, signs of his past life.
Disclaimer - These redesigns are for fun, and not part of any actual project.