The Collector

The Collector was a Usurian. Aided by his human assistant Hade, he oversaw operations in Megropolis One on Pluto. The Usurians' Company had, by this time, made Pluto into a world inhabited by humans who lived in cities lit by artificial suns. In his native form the Collector resembled kelp. He maintained a humanoid form on Pluto. When the Fourth Doctor reprogrammed the Company computer to apply a 2% growth tax, indexed, the loss of profits so upset the Collector that he reverted to his native form and was imprisoned with a champagne cork. (TV: The Sun Makers)

Also known as
Gatherer Hade uses the following terms to address the Collector, all prefaced with the word 'your': Highest, Sublimity, Eminence, Elevation, Pinnacle, Colossus, Hugeness, Amplification, Vastness, Voluminousness, Globosity, Mightiness, Magnificence, Immensity, Sagacity, Omniscience, Supernal Eminence, Corpulence, Promontory, Omnipresence, Aggrandizement, Grossness, Orotundity.