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)