Known as the Archfiend or the Lord of the Pit. Lawful Evil god of tyranny, slavery, and contracts. The only archdevil of Hell that has claimed full divinity, and the only evil god whose worship is openly condoned in civilized society.
The holiday known as the Days of Wrath is celebrated by his worshippers on the two solstices.
First Reference: Chapter 2
Other Notable References: Chapter 49