Roman Groom BSc BA MSc (2034-2059) was an American member of the group on Bowie Base One. He was the designer and operator of the robot Gadget and gave it its "comedy" persona, though this backfired on him when the Tenth Doctor modified the robot to move at a considerable speed, causing Roman significant pain in the process.

A child genius, Roman attended Berkley University, from where he graduated by age seventeen with a bachelor of science in Physics, a bachelor of Arts in English and a master of science in Physics. He decided to sign up with NASA after reading about their search for astronauts in the university newspaper.

Groom was accepted as an astronaut in January 2051 and began a two year training and evaluation period, excelling in every field.

He was the youngest member of the Bowie Base mission, noted for an instinctive talent for mechanics. While escaping from Bowie Base One, he was infected by the Flood when a single drop of water fell on his cheek. He warned Adelaide Brooke and the remaining members to run before he transformed. If anything remained of Roman, it was killed when Adelaide blew up the entire base. (TV: The Waters of Mars)

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