Board Thread:Character Discussion/@comment-31427137-20170409223655/@comment-31749935-20170415211243

People don't become lesbians :P I think you meant that Mulan later told him that she was a lesbian, which I suppose works in your theory.

In terms of him being the father of Lily I don't think the genetics would work like that because they would still reflect the human forms of the parents. They have the same DNA in dragon form as they would in human. There is still a missing dragon (I think) in the form of the dragon that forged the Holy Grail/Excalibur so it could be that as Maleficent is considered to be immortal (again, I think)

I do like the theory of Mulan being his daughter though, as it fits and it would be nice to see her have some sort of resolution, rather than just wandering alone.