darth tyranus (count dooku) was a male human sith lord and the second apprentice of darth sidious. dooku was a former jedi knight, trained by grand master yoda and who took qui-gon jin as his apprentice, but later became disillusioned by the rampant corruption within the galactic senate, realizing that immediate change was needed in order to maintain peace. he first appeared in "", which revealed that he had a prominent role in engineering the clone wars, recruiting bounty hunter jango fett to become the template for an army of clones to be used by the galactic republic. dooku led the separatist alliance as its public figurehead during the clone wars until he met his demise while dueling anakin skywalker aboard the "invisible hand" in "". unlike his predecessor, darth maul, sidious never truly cared about dooku and merely used him as a puppet to help him with his plans, having always wanted skywalker as his next, real apprentice.