Dark Plague

The Dark Plague was a Force-influenced disease developed by the Sith Lord Terrak Morrhage. Morrhage used the plague to corrupt the minds of Jedi Masters across the galaxy, using them to fight the Jedi Order. Morrhage was defeated, but during the Cold War, his spirit possessed the fallen Padawan Parkanas Tark, once again using the Dark Plague to corrupt the Order.

Appearances

 * Star Wars: The Old Republic