| Gender | Male |
|---|---|
| Occupation | Russian conspiracy member Men in Black member FBI Special Agent |
| Affiliated with | Syndicate |
Krycek is a Russian-American, the son of Cold War immigrants, where Krycek, a young FBI Special Agent is assigned as a temporary investigation partner to Fox Mulder. Krycek proceeds to work with Mulder and attempts to gain his trust.
It later becomes evident, however, that Krycek is actually an undercover agent working for the Smoking Man. Krycek plays an important part in several events that are harmful to Mulder and Dana Scully: he assists in Scully’s abduction, and murders Mulder’s father, William “Bill” Mulder. Krycek also assaults Assistant Director Walter Skinner and acquires a secret tape from him which reveals a US government-coverup regarding alien visits to Earth. After a botched attempt on Scully results in the death of her sister, the Cigarette Smoking Man attempts to kill Krycek with a car bomb, but Krycek escapes. Krycek is later found to have been selling the secrets from the encrypted MJ files. Under the influence of the Black Oil, Krycek returns the tape to the Smoking Man, in return for knowledge of the location of an alien ship. The Black Oil-controlled Krycek goes to the ship, which has been moved to an abandoned missile silo in North Dakota. The Black Oil extracts itself from Krycek, leaving him locked indefinitely in the silo with the ship.