Lee Harvey Oswald is a fictional character portrayed by Morgan Weisser in the TV series The X-Files.
In the first episode they appeared in, titled Musings of a Cigarette Smoking Man (season 4), they were 25 years old.
They appear in 1 episodes out of a total of 217 aired
Episodes1
Musings of a Cigarette Smoking Man
episode S4.E7 november 1996The Lone Gunmen reveal the (possibly fake) secret history of the Smoking Man to Mulder with focus on three episodes from his life - the assassination of JFK, his attempts at becoming a novelist and one of his UFO cover ups.