Darth Baras gained weight during the Cold War. When his fellow Dark Lords asked him why, he said that he didn't need to train because he was too powerful. This lead to an unnatural weight gain that has unfortunately forced him to refrain from fighting on the front lines. If the Dark Lords ever need to get rid of him, they plan to have him lead an assault on Coruscant personally.
Did Aurbere just make a joke?! :P (you know I love you)