A universe where Spider-Man decided to work for Nick Fury in order to surpass himself and become the "Ultimate" Spider-Man, and also where the previously-disbanded Avengers reformed to fight the threats to the world again. The former is regularly teamed up with other young heroes to form a special superhero Task Force used to complete various missions assigned by S.H.I.E.L.D. in order to train them for their adulthood, and Hulk formed a team called "Agents of S.M.A.S.H." to deal with "Hulk-sized" threats, and prove to the world that they're not monsters, but a family.

Earth-12041 is the reality designation for:

• Ultimate Spider-Man
  • Marvel Universe: Ultimate Spider-Man
  • Ultimate Spider-Man Infinite Comic
  • Marvel Universe Ultimate Spider-Man: Web Warriors
  • Marvel Universe Ultimate Spider-Man: Web Warriors - Spider-Verse
  • Marvel Universe Ultimate Spider-Man: Contest of Champions
  • Ultimate Spider-Man Infinite Comic (Vol. 2)
  • Marvel Universe Ultimate Spider-Man vs. the Sinister Six
  • 5-Minute Spider-Man: Stories Spider-Man and his Amazing Friends
• Marvel's Avengers Assemble
  • Marvel Universe Avengers Assemble
  • Avengers Vs.
  • Avengers vs. Infinity
  • Marvel Universe Avengers Assemble Season Two
  • Marvel Universe Avengers Assemble: Civil War
  • Marvel Universe Avengers Infinite Comic
  • Marvel Universe Avengers: Ultron Revolution
  • Avengers Solo Act
  • Marvel's Avengers: Secret Wars Shorts
• Hulk and the Agents of S.M.A.S.H.
  • Marvel Universe: Hulk and the Agents of S.M.A.S.H.
• Marvel's Hulk: Where Monsters Dwell

The characters are mostly based on characters from Earth-616, but use elements and story lines from Earth-1610 and Earth-199999.

See: Earth-12041 Characters

• Prior to being given an official reality number, this universe was referred as Earth-TRN123 as a part of our Temporary Reality Numbers classification system.
• 12041 is a reference to the universe's first appearance date: April 1, 2012 (12/04/1), the day Ultimate Spider-Man S1E01 first aired.
• At San Diego Comic Con 2016, it was confirmed that while mutants still exist in this universe, they won't be appearing for the foreseeable future.^[1]
• Marvel's Guardians of the Galaxy and Season 5 of Marvel's Avengers Assemble take place on Earth-17628 instead, as the former referenced events from Marvel's Spider-Man^[2] instead of Ultimate Spider-Man.
• Marvel Animation producer Harrison Wilcox later clarified that the entire Marvel's Guardians of the Galaxy series, and not just its third season onwards, shares the reality with Marvel's Spider-Man,^[3] making the 2015 episode "Road to Knowhere" the first appearance of this reality. However, he also acknowledged that events in the cartoon that were tied to Earth-12041 meant that the events of the first and second season could've happened in both universes, and suggested the possibility that Earth-12041 was changed into Earth-17628 when Loki undid the Beyonder's Battleworld.^[4]