Horatio's Mentor

Was Horatio's mentor, arrested by the church of Heironeous and executed. Rose from the dead after cursing his once-god, and devoted himself to the service of Hextor.

Possible levels of Warrior of Darkness from the Book of Vile Darkness pg 75
Sorceror and Anti-Paladin Levels
Fiend-Blooded levels, prestige class from Heroes of Horror pg 103