rock, his left arm is amputated to prevent some experiments on him. Later in the series, Krycek can be seen switching sides as it suits him, occasionally helping Mulder, Cigarette Smoking Man and other people. He attempted to blackmail Skinner by infecting him with lethal nanotechnology, but ended up being thrown into a Tunisian prison when the Cigarette Smoking Man discovered that Krycek had stolen an alien artifact from him. In the last season 7 episode, "Requiem", Krycek apparently kills the Cigarette Smoking Man by pushing him down a flight of stairs. Later, when Mulder was abducted by aliens and returned in a deathlike state, Krycek attempts to again blackmail Skinner, offering the means to save Mulder's life in exchange for Scully's baby. Skinner refuses, and Krycek has a violent confrontation with John Doggett before escaping. In the last season 8 episode, "Existence", Krycek is shot between the eyes and killed by Skinner during an unsuccessful attempt to kill Mulder. Krycek's ghost briefly showed up to help Mulder escape a military base in the series finale. Knowle Rohrer Knowle Rohrer is portrayed by Adam Baldwin. He served alongside Sergeant John Doggett in the U.S. Marine Corps with the 24th Marine Amphibious Unit in Beirut, Lebanon. Doggett and Rohrer were friends, but lost touch when Rohrer and Shannon McMahon were taken out of their company to be the first people transformed into Super Soldiers, a new type of alien-human hybrid intended by the alien Colonists as replacements for normal humans. Knowle reached the rank of Master Sergeant and continued on with his military career by joining the Department of Defense. The work he did there is unknown, but it is safe to assume that he was involved in classified operations. When Doggett became assigned to the X-Files, he re-established contact with Rohrer. Doggett became suspicious of Rohrer when information was given to him from Rohrer that got a man killed, but it was not until Doggett saw Rohrer meet with Alex Krycek that he realized Rohrer was a member of the conspiracy. In "Nothing Important Happened Today II", he is decapitated by fellow Super Soldier, Shannon McMahon, but owing to his hybrid abilities, manages to then impale her with his arm, and they both fall into a water reservoir, presumably both now dead. However, in the series finale, "The Truth", it is revealed that he survived, when Mulder breaks into Mount