Aaron Copley
From Tardis Wiki, the free Doctor Who reference
Aaron Copley was a physician and scientist working in Wales. He captured alien species, and tried to create vaccines for human illnesses. He knew they were going to die but he needed to find a way to cure human illness and he used a species called the Mayfly.
He shot and killed Owen Harper and was later shot by Captain Jack moments later, while threatening to shoot Martha Jones.
