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123 free The X-Files trivia questions with answers — entertainment quiz, new questions added Aug 2026.
50 free The X-Files trivia questions with answers. Think you're a true X-Files fan? Put your knowledge of the paranormal, government conspiracies, and FBI investigations to the test with our comprehensive trivia quiz. From memorable episodes to character details, this quiz covers all nine seasons of the cult classic series that defined a generation of television.
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Q 01Who created the television series The X-Files?
Chris Carter
Chris Carter wrote the pilot himself and many episodes after it, steering the show across nine seasons and two revivals.
Q 02In what year did The X-Files originally premiere on television?
1993
The X-Files first aired on the Fox network on September 10, 1993, kicking off its nine-season original run.
Q 03Fox Mulder's younger sister vanished when he was 12; what was her name?
Samantha
Samantha Mulder, aged eight, vanished from the family home in November 1973; Fox believes aliens took her, and that loss drives his obsession with the paranormal.
Q 04Beyond her role as an FBI Special Agent, what is Dana Scully's primary professional background?
Medical Doctor
Medical Doctor is the degree Scully brings to the X-Files; as a forensic pathologist she performs the autopsies that put Mulder's theories to the test.
Q 05Which actor famously portrayed the enigmatic antagonist known as the Cigarette Smoking Man?
William B. Davis
William B. Davis brought the iconic and sinister Cigarette Smoking Man to life, a character who became one of the series' most enduring villains.
Q 06Who composed the iconic, eerie theme music for The X-Files?
Mark Snow
Mark Snow is responsible for the distinct and memorable instrumental theme that became synonymous with The X-Files.
Q 07During its initial five seasons, where was the primary filming location for The X-Files?
Vancouver, British Columbia
The first five seasons of The X-Files were primarily filmed in Vancouver, British Columbia, before production moved to Los Angeles.
Q 08What are standalone X-Files episodes unrelated to the main conspiracy commonly called?
Monster-of-the-Week
Monster-of-the-Week episodes began with 'Squeeze', only the third episode ever aired, which proved the show could work outside its alien mythology.
Q 09Dana Scully earned a Bachelor of Science degree in what field from the University of Maryland?
Physics
Before attending medical school, Scully received a Bachelor of Science degree in physics, demonstrating her strong scientific foundation.
Q 10Fox Mulder's FBI background before joining the X-Files unit was primarily in what specialized field?
Criminal profiling
Mulder was a skilled criminal profiler, a background that honed his investigative abilities before he dedicated himself to the X-Files.
Q 11In season seven's 'Closure', what finally happened to Mulder's sister?
She died after being taken by 'walk-ins'.
A psychic named Harold Piller leads Mulder to the truth: she was taken by 'walk-ins', beings of starlight said to spare children doomed to unhappy lives.
Q 12What is the phenomenon of women inspired into STEM careers by The X-Files' sceptical FBI doctor called?
The Scully Effect
The 'Scully Effect' refers to the documented influence of Dana Scully's character on women and girls choosing careers in STEM fields.
Q 13How many episodes did the original run of The X-Files comprise?
202
Q 21How many seasons were in the original run of The X-Files television series, before any revivals?
9
9 seasons and 202 episodes, ending in May 2002; the show later returned for a six-episode tenth season and a ten-episode eleventh.
Q 22Which actress won an Emmy in 1997 for playing the sceptical Dr. Dana Scully?
Gillian Anderson
Gillian Anderson also collected a Golden Globe and two Screen Actors Guild awards for Scully, and played her for all eleven seasons.
Q 23What is Assistant Director Walter Skinner's role in relation to Mulder and Scully?
Their FBI superior
Their FBI superior, a former Marine played by Mitch Pileggi, spends years torn between the Bureau and his agents before seeing an alien craft himself in 'Requiem'.
The two revival seasons in 2016 and 2018 later added another sixteen episodes on top of that.
Q 14Which actor plays Special Agent Fox Mulder?
David Duchovny
David Duchovny's Mulder is a talented criminal profiler as well as an ardent supernaturalist, convinced the government is hiding the truth about extraterrestrials.
Q 15On which television network did The X-Files originally premiere?
Fox
Fox was still a young network, and the show became one of its first big hits before returning for two revival seasons in 2016 and 2018.
Q 16What does Special Agent Fox Mulder believe lies behind the unsolved cases filed as X-Files?
They involve aliens and the paranormal.
They involve aliens and the paranormal. Mulder is convinced extraterrestrials are already on Earth and that the government conspires to hide the truth.
Q 17What nickname did Fox Mulder earn due to his beliefs in the paranormal?
Spooky Mulder
'Spooky Mulder' was the Bureau's joke at his expense, and the nickname came with a posting to a little-known department of unsolved cases, the X-Files.
Q 18What is the number of Fox Mulder's apartment in Alexandria, Virginia?
42
Apartment 42 at 2630 Hegal Place, Alexandria, is Mulder's home for the original run; the brass 42 on his door appears whenever Scully or an intruder comes calling.
Q 19In The X-Files mythology, what have the Syndicate's conspirators secretly developed to survive the aliens' plans?
An alien-human hybrid
An alien-human hybrid able to withstand the black oil virus is the Syndicate's escape plan, having cut a deal to be spared when colonisation comes.
Q 20What term do fans and staff use for the series' overarching extraterrestrial conspiracy storyline?
The Mytharc
Key episodes, known as the 'mytharc', were recognized as the 'mythology' of the series canon; these episodes carried the extraterrestrial/conspiracy storyline that evolved throughout the series.
Q 24What are the names of the three conspiracy theorists who help Mulder and Scully and later got their own spin-off?
Frohike, Byers, and Langly
The Lone Gunmen are a trio of fictional characters, Richard 'Ringo' Langly, Melvin Frohike, and John Fitzgerald Byers, who appeared in recurring roles and starred in their own spin-off.
Q 25Which actor portrayed Mulder's first shadowy informant, Deep Throat?
Jerry Hardin
Hardin thought it was a one-off part; after his character was killed in the season-one finale, Chris Carter told him 'no one ever really dies on X-Files' and he kept returning in visions and flashbacks.
Q 26For what initial reason was Dana Scully assigned to the X-Files unit?
To debunk her partner's theories scientifically.
Scully was sent to debunk her partner's theories scientifically: a medical doctor and sceptic, she was assigned to analyse Mulder's case files.
Q 27What is Dana Scully's middle name?
Katherine
Katherine: the full name Dana Katherine Scully is carved on the headstone her mother chooses while Scully lies near death in the season-two episode 'One Breath'.
Q 28Which two main characters were introduced in the eighth season of The X-Files?
Agent John Doggett and Agent Monica Reyes
In the eighth and ninth seasons, new main characters were introduced: FBI Special Agents John Doggett (Robert Patrick) and Monica Reyes (Annabeth Gish).
Q 29The actor who plays the Cigarette Smoking Man comes from which country?
Canada
Fittingly, the show's first five seasons were shot north of the border, and a younger Chris Owens played the character in flashbacks.
Q 30What is the primary goal of the aliens called 'Colonists' in The X-Files mythology?
To take over Earth and wipe out humanity.
To take over Earth and wipe out humanity. The Colonists, as the writers called them, work with a group of US officials known as the Syndicate.