Darth Nihilus

Darth Nihilus, Lord of Hunger. A being of pure malevolant power, Nihilus was said to have perished at the battle of Malachor 5, but survived in a state of unlife, living off of the force energy in others. A scar in the Force, he could not be defeated by traditional means and it took the combined powers of the Jedi Exile, Visas Marr and Canderous Ordo to destroy him.