Darth Plagueis

Darth Plagueis, remembered by many as Darth Plagueis the Wise, was a male Muun Dark Lord of the Sith and heir to the lineage of Darth Bane. Trained by Darth Tenebrous, Plagueis mastered the art and science of midi-chlorian manipulation. Obsessed with eternal life, he experimented with ways to cheat death and create new life from the midi-chlorians. In his public guise as Magister Hego Damask II of the InterGalactic Banking Clan, Darth Plagueis backed the rise and fall of certain star systems, businesses, and crime lords, earning him many enemies and putting the Galactic Republic into turmoil.

He was ultimately betrayed and murdered by his own apprentice, in accordance with the Rule of Two -- or so everyone thought. Infact, Plagueis instead gave up his former life upon his first transformation into a Mew Mew. He was assumed dead, but his body was never found, and rumor had it that every so often, Mew Plagueis The Wise appeared and jizzed on random lamp posts.