The Collector

The Collector was a Usurian.

Biography
Aided by his human assistant Hade, the Collector 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)

Titles
Gatherer Hade used the various 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, Aggrandisement, Grossness, and Orotundity. (TV: The Sun Makers)