This reality shared the same history as Earth-10005 up until 1973, at which point the Wolverine from that universe travelled back in time from 2023 in order to prevent Mystique from killing Bolivar Trask and thus avert a dystopian future.
Driven by the belief that mutants will one day eradicate the human species, Bolivar Trask commissioned the Sentinel program, a robotic police force designed to hunt down and kill mutants. Mutant shapeshifter Mystique moved to assassinate Trask before the program further developed, but mutants of a dystopian future had pinpointed this as the event that triggered mutant annihilation, and so they sought to prevent it by sending one of their own back in time. By doing so, the X-Men were reformed, the dystopian future was averted, and mutants were set on a new path of redemption.
Following the revelation of mutants' existence to the public, many began fearing what they could do while others formed cults and organizations in response to these mutants. One cult was able to discover what they believed to be the first ever mutant in history, En Sabah Nur. Their discovery led them to excavate his remains from under a fallen pyramid, unknowingly awakening En Sabah Nur from his dormancy. Outraged at what had become of the world during his slumber, En Sabah Nur gathered together four powerful mutants to help him cleanse the world. However, in the end, he was defeated by the X-Men and a mutant who wielded the power of the Phoenix force.
While on a rescue mission in space, the X-Men encountered the true cosmic Phoenix force, which bonded with Jean, the young mutant who wielded a manifestation of its power a decade prior. The Phoenix fought internally within Jean, which broke the mental barriers that Professor Xavier put within her to suppress memories of her childhood trauma. Under the corruption of the Phoenix, Jean accidentally killed Mystique, which caused the X-Men to fragment and Erik to turn her away. The X-Men and Erik only combined forces to help Jean when an alien race known as the D'Bari arrive on Earth, with the intention of conquering it with the Phoenix force. In the end, the alliance was enough and Jean sacrifices herself to end the D'Bari plot. Xavier retired from the school, which was renamed to the Jean Grey School for Gifted Youngsters.
In the modern age, Francis Freeman started developing experiments on how to trigger the dormant mutant gene within any ordinary human via torture and near death experiences. Freeman was successful in creating mutants for his criminal organization, but eventually came into conflict with mutant mercenary Deadpool. Deadpool, determined to get back his ex-girlfriend from Freeman, and teamed up with a couple of X-Men, took down Freeman's organization and put a stop to the mutant experimentation.
By this time, the Essex Corporation had also begun experimenting on the mutant gene, through its appearance in adolescents. They had multiple laboratories and facilities around North America. One facility in particular was the Milbury Hospital, a secure mental institution run by Dr. Cecilia Reyes to evaluate potentially dangerous young mutants who could be killers for Essex. Five young mutants, all of whom believed they were being trained for the X-Men, were detained at the facility but grew increasingly hostile and skeptical due to the nature of the facility. Eventually, they rallied together to escape when one of them unintentionally summoned a Demon Bear, which killed Dr. Reyes. After the Demon Bear was defeated, the group learned Reyes' force field was gone, which allowed them to leave and head to the nearest town.
- This reality was used in films produced by 20th Century Fox, which were meant to be part of the X-Men shared film universe.
- The film Logan was initially assumed to be part of this reality, but it was later established to be in its own reality instead, Earth-17315.
- Deadpool 2 primarily takes place in Earth-41633, a reality where Deadpool's girlfriend Vanessa was murdered, before he went back in time to this reality, and prevented it from happening.
- In December 2017, The Walt Disney Company acquired a significant portion of 21st Century Fox, including its film division 20th Century Fox, for $66.1 billion. Due to this, Disney, who also currently owns Marvel Studios, acquired the film rights for the X-Men and Deadpool. Disney CEO Bob Iger later confirmed that the X-Men and Deadpool would be integrated into the Marvel Cinematic Universe. This meant that any films that were either planned, or was in development, by Fox were initially put on hold, and eventually canceled by Disney.
- In July 2013, director Jeff Wadlow was hired by 20th Century Fox to write a film based on the X-Force comic series. Simon Kinberg later confirmed that the film would feature Deadpool and Cable (both of which had previously appeared in Deadpool 2). However, according to Deadpool writer Rhett Reese, the film would've ultimately been a separate film from a planned third Deadpool film. In September 2017, it was reported that Drew Goddard was hired to write and direct the film.
- The film Gambit was originally planned to be released on the final planned date of March 13, 2020, with Channing Tatum producing and portraying the title character.
- In February 2017, Simon Kinberg stated that there were plans to develop films focusing on Alpha Flight and Exiles, respectively.
- It was announced in November 2017 that Simon Kinberg and James Franco were developing a film centered on the character of Multiple Man, with Franco starring and producing. Allan Heinberg was attached to write.
- In early 2018, it was announced that a film focusing on the character Kitty Pryde was being developed, with director Tim Miller and writer Brian Michael Bendis attached to the project.
- While working on the film X-Men: Apocalypse, editor and composer John Ottman was pitched by his assistant Byron Burton, with a first draft script he had written involving a spin-off film, focusing on the character Beast titled X-Men: Fear the Beast. Said film would've set up the character Mister Sinister as a villain across multiple films, including in a planned Omega Red film.
- According to Josh Boone, in his planned trilogy of The New Mutants films, the third entry would've been a crossover with the main X-Men films, which would've adapted the Inferno storyline.
- 74 characters that originate from Earth-TRN414
- 4 teams that originate from Earth-TRN414
- 8 organizations that originate from Earth-TRN414
- 1 locations that originate from Earth-TRN414
- 7 appearance(s) of Earth-TRN414
- 251 image(s) of Earth-TRN414