Belial

Belial is a Wraith demon and king of Cocytus, one of the kingdoms of Shadowfell. He is considered responsible for bringing wickedness to humanity, being one of the most ancient of the demons.

Personality
Belial is known as the demon of lies and lawlessness, and is known to be deceitful and evil-hearted.

Etymology
Belial is derived from Hebrew "Beliya'al", composed of the words "beli-", meaning "without", and "ya'al", meaning "to be of value". Thus, Belial is believed to mean "lacking worth", "worthless", "yokeless", "may he have no rising", or "never to rise".

In the Satanic Bible, Belial means "without a master", and symbolizes independence, self-sufficiency, and personal accomplishment.