User blog comment:The Deadliest Warrior/Lord Voldemort vs. General Greivous/@comment-2016768-20100727195058

General Greivous and Darth Bane are too strong-willed or strong-minded to be able to fall sucseptible to Imperio. And I'm pretty sure if Grevious can deflect Avada Kedavra with his 'saber, he can do that to a less powerful curse such as Crucio as well.