Mister Apprehension

Mister Apprehension was a member of the Alliance of Shades, an organisation dedicated to keeping alien invasions covered up. After he tried to get a Fusion bar off the Doctor, he was deactivated. (TV: Dreamland)

Behind the scenes
The name Mister Apprehension is spoken only by the Tenth Doctor and is probably just a joke. His real name was never given.