Mace Windu (Revenge of the Sith)

In Star Wars: Episode III – Revenge of the Sith, Windu and the other members of the Jedi Council are concerned that Palpatine may not relinquish his emergency powers when the Clone Wars end. Their suspicions only grow when the Senate grants Palpatine a vote on the Jedi Council by appointing Anakin Skywalker as a personal representative. While they grant him a seat, the Council declines Anakin the rank of Jedi Master, and orders him to monitor Palpatine. After Obi-Wan kills General Grievous, Anakin informs Windu of Palpatine's true identity as the Sith Lord Darth Sidious. Acting swiftly on this revelation, Windu and three other Jedi Masters attempt to arrest him, but Palpatine mercilessly kills Windu's companions and fights the Jedi Master. Windu subdues Palpatine by knocking away his lightsaber and deflecting the Sith Lord's Force lightning back into his face just as Anakin arrives. Over Anakin's objections not to kill Palpatine, Windu assures him that Palpatine has control of both the Senate and the courts and that he must be killed. However, Anakin intervenes on Palpatine's behalf, severing Windu's lightsaber arm and leaving him helpless. Palpatine then uses his Force lightning to send Windu plummeting to his death.