User blog comment:Stbk22/Possible Power up's/Techniques for then new group DxD/@comment-1884090-20140204160946/@comment-1359322-20140205080511

@Shegzy.

Usually a Devil only inherits the powers/traits from one of his parents, either the father or the mother, Sairaorg was such one case, he was born with the Lion Tamer ability of his mother. In Rias' case, she inherited the POD from her mother. Sirzechs is an exception among Devil to have inherited both traits from both his parents, that's also one of the reason why he became a Super Devil, because of his receiving this advantage that other Devils don't receive.