Ballard (Whodunnit?)

Dr Ballard was a scientist on the SERVEYOUinc-operated United System Research Base. He was responsible for experiments on ARC.

The Eleventh Doctor described his laboratory as a torture chamber.

At some point, ARC read all information from his brain sending him into coma. (COMIC: Whodunnit?)

The intervention of the Doctor helped return all comatose people back to life. (COMIC: The Sound of Our Voices)