User blog comment:B214/Question and Answers 6/@comment-216.208.169.198-20190605020004/@comment-10330822-20190608013046

Traditionally anything with godblood is considered a demi-god, even if a parent is a devil. A Demon God would be the devil equivalent to a god, so that's not quite accurate unless it literally is a god on its own. But Demi-Gods are mortals, like the original Heracules and the Valkyries.