User blog comment:Jopjopjop/Volume 19 Spoilers/@comment-69.180.107.74-20150520202119/@comment-124.195.118.239-20150520230650

Not every Demigod who laters become Heroes has the same idea as Cao-Cao and can be brainwashed by Cao-Cao.

The vampire hunter in dxd is mostly from the church and there is Siegfried(descendant) who was trained as exorcist then later joined the Heroes Faction