Naberius

Naberius is a Banshee Demon and Marquis of Neshiyyah. Considered to be the bravest of all named demons, he is considered the eternal guardian of all demons. Playing somewhat of a political role, he keeps an eye on all that happens in the Underdark. He also has the ranks of Field Marshall and Inspector General.

He has been given the power to strip those who are unworthy of their ranks and titles, and restore these titles to those who have been unfairly stripped of their dignities. He speaks with a powerful yet hoarse voice, and is eloquent in his speech.

Though extremely tough, he is friendly and extremely fair. He wields the power to raise the dead.

Ancient Greece
In ancient Greek mythology, Naberius was known as Cerberus, the "hound of Hades", a multi-headed dog that guarded the gates of the Underworld to prevent the dead from leaving.

Physical appearance
Naberius' initial form is that of a vicious three-headed dog, often recognized as the hellhound from Roman mythology, Cerberus.

In his human form, he has a greenish hue to his skin.