The intro of The X-Files famously states that "the truth is out there". The show was created by Chris Carter. Chris is a nickname for Christopher. Christopher means "Christ-bearer".
https://www.etymonline.com/word/Christopher >Church Latin Christophoros, from Ecclesiastical Greek khristophoros, literally "Christ-bearing;" from phoros "bearer," from pherein "to carry,"
X is a symbol for Christ. It represents The Greek letter chi in Χριστός (Christos). The idealist Gospel of John places an emphasis on truth.
