by Zachary Ansley, appeared in five episodes of the series. First seen as the apparently comatose son of a detective from the town Bellefleur, Oregon, Billy was later revealed to be unwittingly assisting in the abductions and deaths of several of his former high school classmates whilst controlled by another presence. Eight years later, having recovered from these events, and now a sheriff's deputy, Miles contacted Mulder and Scully to seek their aid investigating a possible UFO crash. During the course of this investigation, Miles, and Mulder, were abducted. Miles' body was later recovered, in an advanced state of decay, from which was he not only revived, but recreated as a "super soldier", an advanced form of alien-human hybrid. In this new form, Miles set his sights on killing all of those involved in monitoring Scully's abnormal pregnancy, eventually targeting Scully herself. Bill Mulder William "Bill" Mulder is portrayed by Peter Donat. William was the father of Fox and Samantha Mulder and husband of Teena Mulder. He was born in California in 1936. As a young man, he began working for the government and eventually the State Department. Among his colleagues were Deep Throat, Alvin Kurtzweil, and the Cigarette Smoking Man. In 1973, the group of men became organized as the Syndicate. As part of the colonization plot, the members of the Syndicate were to exchange a loved one each for an alien fetus. Possession of the fetus would allow the Syndicate to begin development of an alien-human hybrid. Mulder was against this exchange and did not appear at El Rico Air Force Base with a loved one as planned. In order to secure the exchange, an alien spacecraft was sent to retrieve his daughter, Samantha, who had been selected by Mulder instead of his son, Fox. Horrified at his own involvement, Mulder came up with the plan to create a vaccine against the alien virus that would be used during colonization. Even though he got his way and development of the vaccine began, Mulder suffered further personal trauma when he and his wife divorced. He moved from their home in Chilmark to another in West Tisbury, Massachusetts. In 1995, William planned to divulge all his secrets to his son after encountering a clone of Samantha fleeing an alien bounty hunter. However, the Syndicate learned of his intention to reveal the truth to Mulder, and Alex Krycek was sent to