X-Man and the Life Seed created this plane during the battle against the X-Men and numerous other mutants on Quadra Island.^[1] The Life Seed was the "spark" that initiated the process and Nate Grey was the "kindling" whose energies created and merged with the world;^[2] Nate essentially became the world.^[3] Nate transported the mutants from the battle to this plane, erased their memories, and molded this reality based on a "collective vision" of a mutant-only paradise that he pulled from everyone's minds.^[3] Eventually, the X-Men learned the truth and confronted Nate, who agreed to return them home.^[2]

• Danger Room Prison Complex (Defunct)
  • Forge, Warden (Formerly)
  • Bishop (Lucas Bishop) (Formerly)
  • Beast (Henry McCoy) (Formerly)
  • Dani Moonstar (Apparently deceased)
  • Gabby Kinney (Formerly)
  • Legion (David Haller) (Formerly)
  • Luke (Apparently deceased)
  • Polaris (Lorna Dane) (Formerly)

• Department X (Defunct)
  • Blob (Fred Dukes) (Formerly)
  • Escher (Apparently deceased)
  • Iceman (Bobby Drake) (Formerly)
  • Jubilee (Jubes Lee) (Formerly)
  • Moneta (Deceased)
  • Northstar (Jean-Paul Beaubier) (Formerly)
  • Psylocke (Betsy Braddock) (Formerly)
  • Queen Dazboh (Apparently deceased)
  • The Siberian (Deceased)
  • Twodee (Apparently deceased)
  • Wayland (Apparently deceased)

• Mastermind Studios (Defunct)
  • Briquette (Apparently deceased)
  • Julian Keller (Apparently deceased)
  • Regan Wyngarde (Apparently deceased)

• Studio X (Defunct)
  • Apate (Apparently deceased)
  • Amara Aquilla (Formerly)
  • Callisto (Apparently deceased)
  • Colin McKay (Formerly)
  • Meggan Puceanu (Formerly)
  • Noriko Ashida (Formerly)
  • Scope (Phillip Marshall) (Apparently deceased)
  • Stepford Cuckoos (Formerly)
    • Celeste Cuckoo (Formerly)
    • Irma Cuckoo (Formerly)
    • Phoebe Cuckoo (Formerly)

• Summers Institute Faculty (Defunct)
  • Angel (Warren Worthington III), Dean (Formerly)
  • Madison Jeffries, History Division Instructor (Formerly)
  • Dr. Cecilia Reyes, Medical Division Instructor (Apparently deceased)
  • Paige Guthrie, Agricultural Division Instructor (Formerly)
  • Shiro Yoshida, Civil Management Division Instructor (Formerly)
  • Sally Blevins, Librarian (Apparently deceased)

• Summers Institute student body (Defunct)
  • Anole (Vic Borkowski) (Apparently deceased)
  • Armor (Hisako Ichiki) (Formerly)
  • Beak (Barnell Bohusk) (Formerly)
  • Bling! (Roxy Washington) (Formerly)
  • Gentle (Nezhno Abidemi) (Formerly)
  • Glob Herman (Robert Herman) (Formerly)
  • Hollow (Apparently deceased)
  • Luna (Apparently deceased)
  • Manon (Apparently deceased)
  • Maxime (Apparently deceased)
  • Pixie (Megan Gwynn) (Apparently deceased)
  • Primal (Teon Macik) (Formerly)
  • Quill (Maxwell Jordan) (Apparently deceased)
  • Rockslide (Santo Vaccarro) (Formerly)
  • Shark-Girl (Iara Dos Santos) (Formerly)
  • Solis (Apparently deceased)
  • Trance (Hope Abbott) (Formerly)

• X-Men (Defunct)
  • Cable (Nathan Summers) (Deceased)
  • Colossus (Piotr Rasputin) (Formerly)
  • Cyclops (Scott Summers) (Deceased)
  • Gambit (Remy LeBeau) (Deceased)
  • Hope Summers (Deceased)
  • Jean Grey (Formerly)
  • Magneto (Erik Lehnsherr) (Formerly)
  • Nature Girl (Lin Li) (Formerly)
  • Nightcrawler (Kurt Wagner) (Formerly)
  • Professor X (Charles Xavier) (Deceased)
  • Rogue (Anna Marie) (Deceased)
  • Storm (Ororo Munroe) (Formerly)
  • X-23 (Laura Kinney) (Formerly)
  • X-Man (Nate Grey) (Formerly)
  • Wolverine (Logan) (Deceased)

• X-Tracts (Defunct)
  • Murshid En Sabah Nur (Formerly)
  • Dazzler (Alison Blaire) (Formerly)
  • Eye-Boy (Trevor Hawkins) (Formerly)
  • Shadowcat (Katherine Pryde) (Formerly)
  • Unveil (Sharesse) (Apparently deceased)
  • Genesis (Evan Sabahnur) (Formerly)

• Others
  • Irene Schank (Apparently deceased)
  • Match (Ben Hammil) (Formerly)
  • Maggott (Japheth) (Formerly)
  • Mercury (Cessily Kincaid) (Formerly)
  • Nezumi Sen (Apparently deceased)
  • Omega Red (Arkady Rossovich) (Formerly)
  • Quicksilver (Pietro Maximoff) (Deceased)
  • Scarlet Witch (Wanda Maximoff) (Deceased)
  • Scripture (Apparently deceased)
  • Tenia Jean (Apparently deceased)
  • Transonic (Laurie Tromette) (Formerly)

• Prior to being revealed as simply a pocket dimension within the Prime Marvel Universe, this plane of existence was known as Earth-TRN716 as part of our Temporary Universe Numbers system.