User blog comment:Jopjopjop/Volume 18 Spoilers/@comment-173.71.153.83-20150210171741/@comment-1359322-20150226063302

@anon, i'll try to provide an explation. There are 2 types of Devils or to be exact 3 types currently. But i'll just explain 2 of it, Pure-blooded Devils and Reincarnated Devils.

The first one, Pure-blooded Devils are Devils that hasn't breed with other species. Regardless of what clan they are form, Pure-blooded Devils are ones that are form between Devils only.

The Second one, Reincarnated Devils, are Devils that are reincarnated through the Evil Piece and originally belong to other species thus they aren't view as pure-blooded since they don't carry a Devil's blood, just power and name.

Now since i mentioned three, i'll give no. 3. Half-blooded Devil. A mix between Pure-blooded Devils and other species. Either the mother or father is a pure-blood but the other isn't a Devil.