A high-powered Syndicate member that oversees and controls the movements of the Cigarette-Smoking Man and other projects. The Fatman, or First Elder, commands instant respect and immediate attention from the other members of the secret group. The Fatman met his doom at the hands of the "faceless" alien rebels.
Date of Death: Unknown
Eps: various

Following first contact with the alien colonists in the late 1940s, this group conspired to prepare mankind for alien servitude. The Syndicate collaborated with the alien host to abduct innocent civilians in order to obtain genetic information necessary to engineer an alien-human hybrid capable of serving as a slave race. Unbeknownst to the colonists, the Syndicate attempted to buy time to create a vaccine against the alien black oil, known as "purity". Unfortunately, with the discovery that Cassandra Spender was the first true alien-human hybrid, the Syndicate ran out of time and was forced to meet with the colonists to turn over their genetic discovery and prepare for the alien arrival. The alien rebels, however, were able to infiltrate and manipulate the Synidcate into an ambush where most of the members and their family's were exterminated.
Dates of Death: Unknown
Eps: various

While investigating a series of murders in Kenwood Tennessee, Mulder and Scully join forces with Sheriff Daniels. Daniels suspects that Samuel Hartley, a self proclaimed spiritual healer, is murdering petitioners of his church. Though his wife suffers from a debilitating disease, the Sheriff is unwilling to accept Hartley's gift of healing and zealously tries to bring Hartley down. The Sheriff is later able to arrest Hartley as a murder suspect and places him in a jail cell where he is beaten to death by other inmates. Mulder and Scully are later able to prove that Leonard Vance was poisoning parishioners and blaming Hartley for the deaths.
Status: Questioned in connection with the death of Samuel Hartley
Eps: "Miracle Man" (1X17)

Maurice and Lyda occupy a beautiful stately mansion in the burbs. What's the big deal you ask? For one thing, Maurice and Lyda are Christmas ghosts. For another,they annually reenact their true-love death pact by coerceing visitors into killing each other. Mulder breaks into their home to investigate the rumors of its haunting. Tricking Scully into accompanying him by stealing her keys, they both fall under the thrawl of the ghosts. Lyda and Maurice trick Mulder and Scully into shooting one another. The agents are able to survive only by exiting the house, dispelling the mirage the ghosts had created.
Date of Death: Unknown
Ep: "How The Ghosts Stole Christmas" (6X08)

When Agent Spender trashes an X-File involving a mysterious baby abduction, Agent Mulder recovers the destroyed file and quietly investigates the case. Wayne and Laura Weinsider were expecting the birth of their first child. While Laura slept one night, she dreamt that she was accosted by a demon that stole her unborn child -- awaking to find that it truly happened. Mulder suspects that Wayne drugged his wife and destroyed their "imperfect" child. Following Weinsider, Mulder discovers that he has another pregnant wife... who is also having an imperfect child. Wayne, who truly is a demon, only wants a normal child. Learning a hideous secret from his second wife, Weinsider is found by Mulder in his backyard digging up the remains of multiple human children. The Sheriff, who is Laura's brother, arrives on the scene and shoots Weinsider before he can stop his unholy second wife and their demonic child.
Date of Death: Unknown
Ep: "Terms of Endearment" (6X06)

After months of dronish background check duty, Assistant Director Kersh assigns Scully to assist Agent Ritter in investigating a series of death scene photographs that seem to have occured seconds after the death of the victims. Scully and Ritter soon suspect that Alfred Fellig, a professional photographer, has been at the scene of many questionable deaths, as they happened. Scully investigates on her own and learns from Fellig that he has the ability to "see" death as a physical manifestation. Researching FBI records, Mulder discovers that Fellig is over 149 years old and connected to the death of a nurse. Fellig later explains to Scully that he encountered death long ago but "turned away", thereby cheating death and forcing him to claim his nurse in his place. Fellig seeks photographic proof of Death's face to end his eternal suffering. Recognizing that death was coming for Agent Scully, Fellig finds the courage to face death and takes her place.
Date of Death: Unknown
Ep: "Tithonus" (6X09)