One-Eyed King

The One-Eyed King (name unknown) is the leader of Aogiri Tree.

Appearance
Thus far into the series it has only shown One-Eyed-King to be dead. He can also be a true half-ghoul and half-human, but there isn't enough information. It seems his right eye is a Kakugan and his left eye could be normal.

The CCG considers the One-Eyed-King and the One-Eyed-Ghoul to be one and the same. Whether or not this is actually the case has not been confirmed.