Lieutenant Terry Wilmer (played by Colin Cunningham) served on the USS Allegiance Submarine, which tried to destroy the alien bounty hunter's UFO. (TXF: "End Game").Terry Wilmer was the one who initially opposed the attack of the alien ship. The UFO, which crashed in the icy arctic waters of the Beaufort Sea. (TXF: "Colony"), was able to immobilize the submarine. (TXF: "End Game"). The returning bounty hunter killed the crew of submarine, including Lieutenant Terry Wilmer, whose shape he picked up. Mulder, after entering the submarine, found the disguised bounty hunter, who claimed that he was the only survivor person as Terry Wilmer.