Yago

Yago was a lieutenant in the Rendili dreadnaught fllet during the Clone Wars. He felt that that Rendili would be better off if it left the Republic and took its powerful fleet to the Confederacy. Yago was personally responsible for leading the mutiny that captured fleet commander Jace Dallin, Jedi Master Plo Koon and Jan Dodonna. He then took command of the fleet and used it to attack the Republic forces with the aid of his Confederacy reinforcements.

However, the prisoners were freed by Jedi Obi-Wan Kenobi and Quinlan Vos Jace Dallin personally killed Yago and took control of the fleet again, ending the mutiny.