Nikola Tesla

Nikola Tesla was a human scientist. He allowed half a million volts of electricity to pass through himself, and walked away unscathed. The Eighth Doctor observed from the audience. (PROSE: The Banquo Legacy)

Professor Elliot Payne brought Tesla to the 1890s to assist him with his time travel experiments. He later helped Henry Gordon Jago and George Litefoot to stop Payne, by allowing them to gain access to Payne's base. (AUDIO: Chronoclasm)

On one occasion, Tesla helped the Seventh Doctor and Melanie Bush defeat the Vardans. (AUDIO: Maker of Demons)