1 definition by TLT (X-Factor)
Someone, who at first struggles though the fans love him but ends up being the savior of the program because of hard work and determination.
One kid that did cross country for Newtown high. He got 54 out of 54 in his first race and then kids started calling him X-Factor because they knew he was saving it all for his last race when he saved Newtown High and finished first.
by TLT (X-Factor) September 20, 2006