Controller

Controller was a title taken with a wide range of implications.

The Morestran Salamar had the title of Controller aboard his probe ship. (TV: Planet of Evil)

Dalek Caan took on the role of Controller after Dalek Sec was exterminated. (TV: Evolution of the Daleks)

Jelpax was the Coordinator] of the APC Net for most of his career, in which capacity he was tasked with surveying "four or five minor galaxies". He and his team once foresaw a future in which the Daleks would become the dominant lifeform of the universe, (PROSE: Divided Loyalties) prompting the Time Lords to send the Doctor back in time in an attempt to derail Dalek development. (TV: Genesis of the Daleks)