"His head's gone. It's like he's been erased."
"Erased from existence."
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Or know as the Alternate 2021 (Also the Western 2021).


  • Timeline 1:
    • Sunday, August 8:
    • Thursday, October 21: Marty McFly Jr. is arrested after being set up for a robbery by Griff Tannen again.
    • Friday, October 22: Marty Jr. is tried, sentenced and convicted to 15 years in the state penetentary for the robbery.
    • Thursday, October 28: Marty's daughter Marlene attempts to break her brother out of prison. She is sentenced to 20 years in jail.
    • Dates unknown
      • Note: The following section is considered non-canon or is disputed in canonicity. After picking up several new copies of the first issue of Action Comics in 1938, Doc returns to an unknown time in 2015 where he sells one of the comics. He then uses the discount he won to get a hover conversion by Goldie Wilson III, has his DeLorean outfitted with a Mr Fusion, and establishes a fake identity under the name Leroy Brown. Then he travels to another point in 2015 to sell another of his Action Comics at Southby's Auction House for $2.5 million dollars. Non-canon or disputable information ends here.
      • Doc undergoes personal rejuvenation surgery and learns as much as he can about Marty Jr.'s meeting with Griff on October 21. Doc also places Einstein in a suspended animation kennel. He places the remaining money in a bank. Eventually, Doc leaves for 1985 to pick up Marty and Jennifer.
  • Timeline 2:
  • Timeline 3:
    • Thursday, October 21: Marty McFly Jr. is erased from history, as his changing the past has caused him to run Hill Valley in an alternate timeline. As a result of his actions, he doesn't exist in 2021 in the new timeline.
      • Marty, Doc, Jennifer and Einstein travel back to 1985, not realizing that they are in a new timeline.
  • Timeline 4:
    • Note: The following section is considered non-canon or is disputed in canonicity. Saturday, October 16: Statler Toyota airs a commercial featuring Jimmy Joe Statler. Non-canon or disputable information ends here.
    • Thursday, October 21:
      • After changing the timeline where Biff ran Hill Valley, and refusing to race Needles in 1985, the fax machine no longer prints that Marty McFly was fired from his job on this date, as Jennifer Parker witnessed the words being erased in 1985.
    • Date unknown: After being accidentally sent to 1885, where he settled to raise a family, Doc managed to create a steam time car, which he used to travel from 1893 to 2035. He then traveled in his temporal field generator Mk II from 2035 to 2015 to pick up a Mr. Fusion. After this, he took the Mr. Fusion back with him to 1985, and installed it in the second DeLorean time machine.
    • Friday, October 22: Griff and his gang are convicted and imprisoned for crashing into the Courthouse.
  • Timeline 5:
    • Note: The following section is considered non-canon or is disputed in canonicity. Thursday, July 15: Microsoft's failed visions of the future were actually a success, leading to an alternate timeline where Microsoft's failed digital assistants, Clippy and Microsoft Bob, were now holograms that controlled everything. This timeline was erased once Doc Brown took the senior vice president of Microsoft's Server and Tools business, Bob Muglia, back to April 4, 2007 to give a revised version of his "Visions of the Future" speech. Non-canon or disputable information ends here.
  • Timeline 6:
    • Thursday, October 21:
      • One hour before his past self would arrive with Marty McFly and Jennifer Parker, Emmett Brown set up a video camera to capture video of a space time correction. He goes back in time to an unknown destination to put his plan in motion.
      • Griff and his gang crash into the Courthouse Mall, and Griff Tannen tries to unsuccessfully implicate Marty McFly Jr.  This seems to imply that Marty and Jennifer allowed their son to get involved with Griff, knowing that their past selves would come to the future to help him.
  • Timeline 7:
  • Timeline 8: