Darth Sion

Darth Sion, the Lord of Pain, was a Sith Lord who lived in the time of the Old Sith Wars. As a Sith Marauder in the Great Sith War, Sion fought for Exar Kun's Sith Empire until the day he was struck down. Rather than die, though, Sion found that by calling on his pain, anger, and hatred, he could rise from certain death and achieve immortality, at the cost of all-consuming agony. With a body fractured and decomposing, but held together by the dark side of the Force, Sion survived the Great Sith War.

Darth Sion is one of the main villains of Obsidian's Star Wars: Knights of the Old Republic II: The Sith Lords video game, voiced by Louis Mellis.