Doctor Barnes was a scientist who believed life on Earth was alien in origin. When Solomon Merkmallen discovered a spacecraft on the Ivory Coast in Africa, Barnes intercepted him at the American University, where Merkmallen intended to meet with Steven Sandoz. (TXF: "Biogenesis")
Barnes murdered Merkmallen and stole his data. Barnes traveled to Africa, where he found Dana Scully already investigating the ship with Dr. Amina Ngebe. Together, the three of them made a lot of progress deciphering the text inscribed on the ship's hull. Barnes eventually grew deranged as he became consumed by his obsession with the ship, threatening the lives of Scully and Ngebe with a machete, should they try to take credit for the discovery. Barnes' most profound discovery was made when proximity to an artifact from the ship brought some dead fish back to life. While distracted by his own wonder at this discovery, Scully knocked him out with a chair and fled the site.
Barnes grew more and more disturbed and even killed his own driver with his machete. However, the life-restoring artifact resurrected the driver as well, who then killed Barnes with a machete strike to the forehead. (TXF: "The Sixth Extinction")
- Dr. Barnes was played by Michael Ensign.