He lives in Apartment 42, Alexandria, VA. His phone number is (202)555-9355.

His parents are William "Bill" and Teena Mulder. Bill Mulder was assassinated by either Alex Krycek or Hispanic Man.

He had one sister named Samantha Ann but I'm sure you know all about her since the whole show was based on her.

She was born January 22, 1964 and dissappeared November 27, 1969.

Mulder has an A.B. in Psychology from Oxford University (1986) and he has Quantico Training Academy (1984). His publications are "On Serial Killers and the Occult," monograph, 1988 and an article in Omni as M. F. Luder.

Mulder was transered to the X-Files section in 1991 and the next year (on the show, not in real life) Agent Dana Scully was assigned to debunk his work.

In October 1994 Agent Alex Krycek is made Mulders partner but after Scully was abducted by Duane Barry Krycek failed to report to work so thats over with.

In the 7th season episode Closure, (part 2 to Sein Und Zeit) Mulder finally found Samantha. This is the same episode that Teena Mulder (his mother) kills herself after burning pictures of young Fox and Samantha. That episode wasn't even a mythology episode. It was about children that were taken because something knew that aweful things were going to happen to them. In her case, she was going to be experamented on. In the episode, Mulder was taken to old military housing and in the front of the house in cement were the names Jeffery and Sam. Jeffery is Jeffery Spender who is the son of CSM. And in a 4th season episode a Samantha said that CSM raised her. So this makes total sence. Inside the house Muder found an old diary of hers that went up until she ran away at age 14. She hardly remembered anything from her old life. She only remembered that she had a brother that teased her alot. "They" were constantly doing tests on her, which is why she ran away. They cought her and while she was in the hospitle Samantha was taken by the "walk-ins" -- old souls lurking in starlight who protect other souls from harm that they would have suffered in real life. At the end Mulder find her spirit and says "I'm Free."

In 7th season episode, Brand X, Mulders lungs were infested with the tobacco beetle larve which wasn't very pleasent. He had to get them sucked out of his lungs.

But this didn't get all of them out. His blood had to have nicotine, and on the way to work the next day he picked up a pack of Morleys. The brand that CSM smokes. So, Mulder might smoke now. We don't know.

In the season 7 finale, Requiem, Mulder was abducted. Well, not really abducted, but he was taken by the aliens. The Alien Bounty Hunter was also taken in the last minute. The only person who saw anything was Skinner. Who had to tell Scully, who was in the hospital because she fainted, later.