|“||The X-Men didn't do this 'cause they thought it would be easy. They knew it would be a struggle. They knew it would take sacrifice.||”|
|— Eclipse to the Mutant Underground[src]|
The X-Men are a mutant group whose whereabouts are unknown after 7/15. They were regarded as heroes by the mutant community, but after 7/15, became known as urban legends due to their mysterious disappearance,
After 7/15, the X-Men foresaw conflict arising between humans and mutants. Before their mysterious disappearance, the X-Men founded the Mutant Underground and had Evangeline Whedon recruit Thunderbird and Polaris to be leaders of the Atlanta station. 
- eXposed (mentioned)
- rX (mentioned)
- got your siX (mentioned)
- eXtreme measures (mentioned)
- threat of eXtinction (mentioned)
- eXploited (mentioned)
- 3 X 1 (mentioned)
- eXtraction (mentioned)
- X-roads (mentioned)
- ↑ Marques, Brad (writer) & Friedlander, Liz (director) (December 4, 2017). "outfoX". The Gifted. Season 1. Episode 9. FOX.
- ↑ Nix, Matt & Garvey, Jim (writers) & Surjik, Stephen (director) (January 15, 2018). "X-roads". The Gifted. Season 1. Episode 13. FOX.
- ↑ Raisani, Rashad (writer) & DePaul, Steven (director) (October 2, 2018). "unMoored". The Gifted. Season 2. Episode 2. FOX.