Master of the Fifth Galaxy

From Tardis Wiki, the free Doctor Who reference

Master of the Fifth Galaxy was a title which was claimed by Zephon after overthrowing the Embodiment of Gris in 3932. (AUDIO: Neverland, TV: The Daleks' Master Plan)

Bernice Summerfield once inadvertently insulted a Master of the Fifth Galaxy. (PROSE: Beige Planet Mars)