Following the First Doctor's emergency evacuation of the Council of Earth and Mars mission to Corbo, Hill was a companion of the First Doctor. He travelled alongside Dr Harroll Strong, and Strong's children, Jack and Dot, as well as Shelly and Chertzog. (PROSE: The Playthings of Fo)
Behind the scenes
Though a member of the Earth-Mars mission to Corbo, Hill is not actually introduced or mentioned until The Playthings of Fo.
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