Mushiki no Ou
A white fox-like entity whose personal goal is to become the strongest, and only King.
He has the ability to take over a person’s body when his eyes meet with the other person’s. If two people are present, a body he’s in control of and the person he wishes to control, then their souls switch bodies.
Ever since a little before the story began he has been in control of the Silver King, Adolf K. Weismann’s, body.