Gordon Flint

In a parallel universe, Flint was a soldier. He came to search Eric Vollmer's research. He praised Lee's work, but he was mutated by the genetic super-soldier experiments Lee had been performing and showed disdain for Vollmer, and didn't have any qualms about giving him to Lee to use as a "guinea pig."

Flint believed that ruthless men had all it took to make history and showed disdain for people who had opposite values.

For 27 years, Flint remained at the base, mutated and wanting to die. He was left for dead by the Doctor, but he knew the Doctor would return for his TARDIS and so waited for the Doctor to come. Full of hatred for the Doctor, Flint force-fed him the TARDIS key and snapped his neck, causing him to regenerate. He blew up the base. (AUDIO: Full Fathom Five)