POPSUGAR Entertainment The X-Files Buzz Brainteaser by Entertainment 9/26/07 0 Shares Like us on Facebook Sign up for our daily newsletter > Follow us on Pinterest Welcome to Buzz Brainteaser, the trivia feature on BuzzSugar! Every weekday I'll test your knowledge about TV shows, music and movies. If you enter in the correct answer, you win points! On "The X-FIles" what was the first name of Mulder's sister? Read More Buzz BrainteaserThe X-FilesTV The X-Files The X-Files: Mulder and Scully Return in More Mysterious Posters For the Revival The X-Files: David Duchovny, Gillian Anderson, and the Whole Cast The X-Files: Check Out All the Exciting Trailers Teasing the Big Revival Mulder Who? Robbie Amell Cuddles Up to Gillian Anderson on The X-Files Set POPSUGAR, the #1 independent media and technology company for women. Where more than 75 million women go for original, inspirational content that feeds their passions and interests. Be in the Know With OurCelebrity and Entertainment Newsletter Personalize A-Listers Young Hollywood TV Movies Sign up with facebook or By signing up, I agree to the Terms and to receive emails from POPSUGAR.