Dalek Section Leader (Planet of the Daleks)

The Dalek Section Leader was the leader of a Dalek taskforce on Spiridon. It was tasked with overseeing an experiment with invisibility. This Dalek ordered the release of the bacteria. But a Spiridon named Wester sabotaged the lab room and released the plague to make sure the room could not be unsealed without other Daleks being killed. The Section Leader was killed by the Dalek Supreme, a member of the Supreme Council, for its incompetence. (TV: Planet of the Daleks)