"A thousand Jedi died cursing Darth Desolous. Now you too will scream my name."
About this creation
Desolous was a Pau'an Sith Lord and former Jedi Master. His study of Sith teachings lead him to the Dark Side and he was expelled from the Jedi Order. Desolous swore revenge and trained and lead an army against the Jedi.
Desolous was defeated by the combined force of the Order, however a holocron lived on and when Starkiller Entered the Temple the holocron was reactivated and it attacked and lost to Vader's apprentice.