Cebrum is not known to have any family.
Cebrum is known as the lord of death. It is not known if he is a god, but some people regard him as one, both out of fear and respect. He is supposedly able to snuff out a life on a whim, and he looks after the souls of all who have perished under his watch.
Cebrum is thought of as being the antithesis of Mathias. Wars between Cebrum and Mathias are believed to be the reason why canyons are carved out throughout the world.