Star Wars does not need to retcon its sequel trilogy.

Doctor Who has introduced a powerful alien race known as the Eternals - and it's subtly rewritten the show's canon all the way back to 1966!

Dragon Ball Super's massive power level retcon for Master Roshi raises several questions about his role (or lack thereof) in previous stories.

At the end of Dragon Ball Z, Gotenks was one of the strongest characters in the series, but now Goten and Trunks barely feature in the story.

Black Widow's Russian family goes back on a quote of hers during Avengers: Endgame that can only really be interpreted as a retcon in the new movie.

One of the bigger reveals to come out of the F9 trailer was the introduction of Dom's brother, Jakob. Here's why John Cena's character drew confusion.

Star Trek: Picard's second episode retcons the Romulans so that they now hate all forms of artificial life. Here's what's behind this major change.

Star Wars will explore Poe Dameron's backstory in a new tie-in novel, which will explain The Rise of Skywalker retcon and resolve that plot hole.

Marvel movies were a lot different before the days of the MCU. Some aspects would be welcomed back but a few need to stay long gone.

The Clone Wars season 7 retcons a significant detail about Ahsoka Tano and her lightsabers

The latest trailer for Star Wars: The Clone Wars seventh & final season creates a plot hole involving the timeline of Anakin and Padme's relationship.

Birds of Prey looks awesome, but if DC wants the movie to be a hit these are 5 things from Suicide Squad that they should keep, and 5 to leave behind.

Doctor Who keeps shifting the fate and status of Gallifrey in the series. Why are showrunners always blowing up or fixing the Doctor's home planet?

Marvel's The Incredible Hulk's (2008) post-credits scene with Tony Stark starting the Avengers was retconned by MCU's short film The Consultant.

The Master and the Doctor continue to fight in Doctor Who - but season 12 confirms that a useful Time Lord power has been removed from the show.

TV retcons happen when a series does something that goes against what had previously been setup. These are the biggest in history.

Retcons are popular when a movie universe needs to change up things in its past or to establish new storylines, and here are some big film changes.

The MCU prides itself for inter-connectivity but it also made some narrative changes for a more concise overall story. Here's their biggest retcons.

The Battle of Jakku was initially considered the end of the Empire; however, retcons have declared the Battle of Endor as its true finale.

Star Wars: The Rise of Skywalker screenwriter Chris Terrio doesn't believe the film takes anything back from Rian Johnson's The Last Jedi.