User blog comment:Stbk22/Possible Power up's/Techniques for then new group DxD/@comment-1359322-20140108062741/@comment-16281343-20140108071810

Basing doesn't mean that you will use a subject faithfully. It means using it where development can be done. So, he based some of the characters from their original myths and changed them to fit the story.

If he referenced it, the characters that he referenced must be what it is in the original myth, with no change whatsoever.