Person Type: Status Unknown
Name: Alex Krycek
Eye Color: Hazel
Hair Color: Brown
Sex: Male
Alex Krycek
History: Alex Krycek, former Bureau agent and undercover operative for undisclosed United States government agencies, was assigned to the X-Files during the time of Agt. Scully's abduction. The Cigarette-Smoking Man was believed to be responsible for the assignment. During the investigation of Agt. Scully's alleged abductor, former Bureau agent Duane Barry, Agt. Mulder was the target of an assassination attempt by Krycek, which failed. Krycek was strongly suspected to be the killer of Duane Barry while the latter was in police custody; however, no charges were filed against him. Following the Duane Barry incident, Krycek disappeared. He resurfaced in Massachusetts, where he killed Agt. Mulder’s father, William Mulder, presumably on orders from person or persons unknown.

Krycek was also suspected in the mistaken assassination of Agt. Scully’s sister, Melissa. Agt. Scully was the intended target of the attempt, conducted by Krycek and another man, Luis Cardinal, the actual shooter. Cardinal was later eliminated by person or persons unknown. An attempt by these same unknown individuals was made on Krycek’s life, but he escaped harm.

Agt. Krycek resurfaced in the company of a group of right-wing militia personnel. At that time, he was captured by Agts. Mulder and Scully after the agents were tipped off to the group’s activities. Agt. Mulder forced Krycek to accompany him to Russia; there, they were detained and forced to undergo unidentified procedures in a Gulag used for medical and biological experimentation. After witnessing Krycek’s collaboration with the prison guards and officials, Mulder escaped, leaving Krycek behind in the custody of unsympathetic local peasants. While in such custody, Krycek lost his left arm to forced amputation.

Krycek has been known to use the alias Arntzen. Krycek's present whereabouts are unknown.
Position: Unknown, possibly free agent