George Trenchard

George Trenchard was a human who was in charge of the prison on Fortress Island where the Master was incarcerated.

Biography
Shortly after the Master arrived there, he persuaded Trenchard (either through hypnotism or coercion) that "enemy agents" were working against him and the country. These "enemy agents" were also responsible for recent ships being sunk in the area. Trenchard then willing helped the Master, going to far as to distract John Hart with talk of golf, while the Master stole various pieces of equipment.

George Trenchard died following the Master revealing his contact with the Sea Devils and a subsequent Sea Devil attack, he was killed after he shot a Sea Devil. (DW: The Sea Devils)