A pretty boy Imperial from the planet Msst.  He was brought to Luke Skywalker's Jedi Academy, but no one suspected his plans to create the "Shadow Academy".  But in an exercise when he was suppoosed to face his destiny he was left angry and scared, he fell into the Sith.  He created the Dark Knights, a new Sith order, with a young man named Zekk as his "Darkest Knight".  His life ended when his Shadow Academy turned into dust.