Xanatos

Xanatos was a former apprentice of Qui-Gon Jinn, Xanatos was taken away from the two things he loved most at an early age: Crion, his father, and Telos, his home planet. After Qui-Gon kills his father after he turns to the dark side, Xanatos picked up a burnt ring and pressed it to his cheek. The half-circle scar is his "trademark." He presents troubles for Qui-Gon and Obi-Wan Kenobi in the Star Wars Jedi Apprentice series of books.