Meilynh

They were turned into a shade by an unknown demon, though it is speculated that it was Akane's mother Akuji. This is so since Akuji is known to plant underlings (or offspring) on a lot of different worlds to aid in her domination through the Odio. The truth is that Meilynh was turned into a shade by Shiki, who planted them with Nibori and Michio to keep an eye on the vampires who are unknowingly so close with the Odio.

They are officially one of Nibori's underlings, though they usually does what they want. Because of Michio's favorite blood (dying blood), Nibori keeps them around anyways, because Michio cannot properly fight someone like that (a Shade), and Nibori takes pleasure in knowing that.