Raven
(Gilbert Nightray)
A member of Pandora who hangs out with Oz and Alice. He uses his power as a Chain to control Alice's power. His primary weapon is a gun. He stays cool and collected when he carries out his duties. Though he is short-spoken and unsociable, he shows his gentle side to Oz sometimes.

Pandora An organization founded by the four duke houses for the purpose of researching the Abyss. Its aim is to take possession of the Intension of the Abyss.

Chain The general term for the beings that came into existence in the Abyss. Each Chain possesses unique power and exhibits its power upon getting a contractor.

Raven 
(He will become Gilbert Nightray later on)