Baskerville

Baskerville was the richest man on Earth around 2010, having earned his money as an arms dealer. He was so wealthy that he had even bought his own personal Concorde once the airline went bust, modifying it to give it a more distinctive look.

Having faked his death, he pretended to be a time traveller so that he could gain access to the ULTRA supercomputer (Claiming that he needed it to calculate a return journey to his time) while offering to sell his time machine. The actual "machine" was just an empty box, but Baskerville gave the users drugged coffee that caused them to hallucinate what he was telling them to see. To reinforce his image as a time traveller, he "predicted" the outcome of a football game (by paying off the players to score precisely when and who he wanted) and the death of a young actress (with a secret fast-acting poison), and destroyed Athens by artificially creating a tidal wave. However, his fourth prophecy — the destruction of Tokyo with a malfunctioning nuclear warhead scheduled to be used for demolitions — was averted by the Eighth Doctor and Malady Chang, the Doctor using the warhead to recharge a stolen time machine.

His true plan was to use ULTRA to take control of the global markets by setting up a system where all of Earth's money was routed through his account, making all financial transactions impossible without Baskerville's approval. Fortunately, he was interrupted before he could enter his account details into the final program, allowing the Doctor to enter his own account details instead and prevent Baskerville completing his plan.

When the Onihr attempted to interfere and acquire Baskerville's time machine for themselves, Fitz was able to trick them into taking Baskerville prisoner and take him back to their planet after the destruction of their ship (actually destroyed by Fitz setting their primary weapon to backfire). Their teleportation technology was limited to travelling at lightspeed, so it would take them several centuries to take Baskerville back to stand trial. (PROSE: Trading Futures)