David Farrell was a Technocracy mage/scientist who developed the first working ion drive, which allowed for inter-system spaceship travel within hours instead of months. As one of the early heroes of the Earth Federation, much of his background has been santized by the Technocracy at that time in order to instill support for the fledging Fed government. Although his official history lists him as a tireless worker for science, unofficial records indicate his participation in the original Tech Infantry, working to secretly bring the organization under the Technocracy's control, aiming towards targeting the rebel mage clans instead of the mages in their orbit. The ion drive is thought to have been developed originally to help fight Gehenna, and only after the war, turned to more peaceful means.
He was one of the first inductees into the Federation Academy of Sciences and held a symbolic seat on the Grand Council later in his career. He died at the age of 97 at his home in Glasgow, Earth in 2072.