User blog comment:B214/High School DxD EX/@comment-26527700-20150629113356

I've been wondering for some time what happens when reincarnated devils reproduce since they do keep attributes of their original species. My theory is that the base species is determined by the original species of the parent and that the devil attribute may or may not be added on.

Of course, even that leaves unanswered questions. For example, it's implied that nekomata can have offspring by mating with a variety of species, so would the children by nekomata or would they be considered hybrids like Vali?