sidious rose to complete power in , when he sent anakin to lead an attack on the jedi temple and ordered the clone troopers to execute order 66, killing many jedi in the process. sidious battled yoda in a duel which would decide the fate of the galaxy. he narrowly defeated yoda, and was able to form a new order upon the fallen republic. he created the first galactic empire. in the time frame from his creation of the empire and his death, sidious was a cold, merciless emperor. he ruled through fear. his evil was staggering as he dominated the galaxy with his ruthless enforcer, darth vader.