"He is not a beast of flesh and blood"-Kreia reffering to Sion in KOTOR 2
About this creation
Darth Sion is another sith lord from Knights of the Old Republic 2, his body is barely held together with the power of the dark side and anger mixed together. In the game him and Darth Nihilus overthrow there master Darth Kreia, and then Sion is appointed the apprentice of the dark lord Nihilus.
And there he is being whopped by his master Darth Nihilus(who by the way in my opinion is the most awesome out of all Star Wars characters!)