Without a boundary separating life and death; within this chaotic world... at first, there stood the original guardian; between Hollow and Man. Quincy, Shinigami, Fullbringer... An existence who could be called the progenitor of all three. It was a Quincy as well as a Shinigami; also a Human. A symbol of hope governing the chaotic world with innumerable abilities like that of Fullbringers. The three worlds were created by sacrificing a being who was both a devil and a messiah.
But before long, Hollows began devouring humans. And so, the circulation ceased. All those souls came together to form a gigantic Hollow, a Menos. The world became completely still. But you know, it's a strange thing. A new life came into being. As if the world itself naturally rejected it, he destroyed it and turned it into sands of reishi; thus, circulation began once again. [That was the Soul King of the first era...?] That's right. Others; with special powers, including myself; appeared. But it is fair to say that the Soul King stood out; his powers very close to omnipotence and omniscience.
The Almighty (全知全能 (ジ・オールマイティ), Ji Ōrumaiti; Japanese for "Omniscience and Omnipotence")
When the body of the Soul King was dismembered and gouged by the ancestors of the Five Great Noble Houses, various pieces from his body were separated and left to rain down upon the Three Worlds. Some of these pieces became known as "Soul King fragments" (霊王の欠片, Reiō no Kakera; Literally meaning "Fragment of the Soul King") and found their way into Humans which enabled them to become Fullbringers, while others had entered into Souls residing in Rukongai.
Right Arm: Fell to the Soul Society, became recognized as Mimihagi, an indigenous god of Eastern Rukongai 76, Sakahone.