Lots of them. The most important, up until seasons 8 and 9, are Special Agents Fox Mulder and Dana Scully, played by David Duchovny and Gillian Anderson.
Later on in the series, there are two new agents named John Doggett (Robert Patrick) and Monica Reyes (Annabeth Gish).
Walter Skinner and the Lone Gunmen (Melvin Frohike, John Beyers, and Ringo Langly) are also on the show quite often.
As for villains, there are Cigarette Smoking Man, Alex Krycek, the Alien Bounty Hunter, etc.
Fox Mulder and Dana Scully are the lead characters in 'The X-Files' . They are FBI agents.
The duration of The X-Files is 2640.0 seconds.
The X-Files: I Want to Believe
The TV series "The X-Files" was created by Chris Carter.
Travelers - The X-Files - was created on 1998-03-29.
Fox Mulder and Dana Scully are the lead characters in 'The X-Files' . They are FBI agents.
X - The X-Files - was created in 1994.
The duration of The X-Files is 2640.0 seconds.
The X-Files: I Want to Believe
Unfortunately no. The X-Files was canceled in 2002.
The X-Files was created on 1993-09-10.
The X-Files Game happened in 1998.
The TV series "The X-Files" was created by Chris Carter.
The duration of The X-Files - film - is 2.02 hours.
The TV series "The X-Files" was created by Chris Carter.
255 characters not sure
Travelers - The X-Files - was created on 1998-03-29.