Doctor Gampu

Brilliant and mysterious practitioner of magic, dark arts, voodoo, etc. known throughout history in association with magicians and witch doctors, such as Merlin, Faust, Alistair Crowley, etc. A Negro, he is believed to have been a personal servant of Silas Atherton, Hieronymous Hookfinger, or one of the other original time travelers, allowing him access to a certain artifact of great power, that he uses to power his devices.