MARVEL's X-Men - The Underground is based on the the Marvel Comics New X-Men, Young X-Men and the Gifted.

The youngest members of the X-Men and the young mutants displaced from the Ultimate Dimension band together underground as the adult X-Men set out to confront villains overseas. The team also confronts the Hellfire Club’s plan for Mutant Supremacy. Originally christened as the New Mutant Underground by the Professor the team decides to rename themselves as the Underground X-Men.

Underground X-Men


  • Adult X-Men (Cyclops, Wolverine, Rogue, Storm, Beast, Gambit, Jubilee, Mystique, Nightcrawler, Emma Frost-Summers and Professor X)
  • Professor Cassandra Xavier
  • Suzanna Dane
  • Avengers (Ms. Marvel, Iron Man, War Machine, Black Widow)
  • Avenging X-Men (Scarlet Witch, Quicksilver, Sunfire, Magik)
  • Young X-Men


  • Dr. Sublime
  • Donald Pierce
  • Empath
  • Hellfire Club
Community content is available under CC-BY-SA unless otherwise noted.