Count Dooku

Count Dooku, also known as Darth Taranus, was the leader of the droid army. He was skilled in both force lightning, as well as with a lightsaber. He overpowered Anakin, even when he used two lightsabers against him. Anakin was stronger the second time around, as well as letting out the hate and anger. Both of which helped him to defeat him, although Anakin was hesitant to finish him off.

He was betrayed by sidious, who said his death was necessary, as he wanted a much younger apprentice.