Darth Debello was a Human Sith Lord of the Empire of Darth Abeonis during the early 100's ABY. Debello fought with honor in several of Abeonis' military campaigns in later life. Upon his promotion to the rank of Sith Knight, Debello became the Sith Master of Darth Krayt, but he was killed during the Successors War by his apprentice, just after beginning his campaign against his former master, Darth Proditor.