Bragen

Bragen was Head of Security of the human colony on Vulcan and the leader of the rebel group against Hensell.

He shot and killed the Examiner, then framed Quinn for rebel activity so as to be made Deputy Governor himself. He then planned to use the Daleks to aid him in seizing control of the colony, unaware that the Daleks were secretly planning to conquer it themselves.

After having a Dalek exterminate Hensell, Bragen decided to have the other rebels killed to secure his power. After the Daleks were destroyed, he was shot and killed by Valmar. (DW: The Power of the Daleks)