Chief Scientist

Both the Daleks (COMIC: The Secret of the Emperor) and the Lizard Kings had a Chief Scientist in their hierarchies. (COMIC: The Prodigal Returns)

The Dalek Chief Scientist reported to the Black Dalek Leader that the First Doctor's TARDIS had left the planet Xeros with its next destination projected as Aridius. A special squad was then dispatched in the Dalek time machine to pursue the Doctor. (TV: The Chase, PROSE: The Chase)