Albert Einstein

Albert Einstein (1879-1955) was renowned as one of the most brilliant scientists of the 20th century. The Doctor claimed to have met Einstein. (DW: The Stones of Blood)

In the 1940s, the Rani kidnapped Einstein and brought him to Lakertya so that his genius could be used to help create her Time Brain. (DW: Time and the Rani)

The Doctor used Einstein as an example of great people who had Dyslexia in order to encourage Elliot Northover to continue trying. (DW: The Hungry Earth)