Board Thread:FAQs/@comment-26261770-20180128201431/@comment-25936766-20180303110327

More positively, in Ozpin's case it's all because of an ages-old divine curse given to him by asshole, lazy gods. But there could be other ways to achieve the same ("1 person with 2 souls").

Problem is, those ways. So far, the show has only 1 thing that could probably achieve that: The Aura Transfer Machine. And that's experimental, top-secret Atlesian technology. It would be extremely hard to write an OC using it and making it convincing.