JK Rowling has forever   guaranteed a name   for herself in the chronological record of history with her disk - breaking serial publication of books about Harry Potter and the man of Hogwarts . But as   awesome as the novels are , they are not exempt from retro - active meddling by Rowling herself .

With her decision to expand on the original mythology   detailed in theHarry Potternovels , there are several plot points from earlier in the serial that have been directly contravene by the source in   later stories . Here are 10   such important retcons Rowling carried   out :

McGonagall Comes Before Her Time

Fantastic Beasts : The Crimes of Grindlewaldtakes place somewhere around 1927 .   That ’s a long fourth dimension in the past times , so there is no prospect of Harry or his friends of a sudden popping up   onscreen for a cameo . However , that has not discontinue the film from trawl for other familiar look from Harry ’s saga . His transfiguration instructor , Professor McGonagall ,   appears briefly in a scene and is   hinted to have a bigger role moving forward .

But the affair is , Rowling has stated in the past that   McGonagall was hold in 1935 . So who is the McGonagall who is likely in her twenties learn alongside Dumbledore at Hogwarts ?   A time traveller or an root ?

The Unbreakable Scar

An unbreakable vow is a var. of magic where two ace   make a treaty and seal the deal   with an fascination that ordains whoever breaks the agreement will croak .   InFantastic Beasts , we see Dumbledore and Grindelwald make that pact , result in a scar that   signal the existence of such a pact .

But inHarry Potter and the Half - rake Prince , we see Snape make such a dangerous pact without suffer a scrape of any kind .   This little item seems to have been bring in subsequently for plot gadget for the young   plastic film .

Dumbledore Is More Bond, Less Headmaster

There are some thing that have been build about Dumbledore ever since the first Harry Potter novel come out . His sense of humor , his immense great power , his great age , and his flamboyant sense of mode . But inFantastic Beasts , a lot of what   we know about Dumbledore is changed to make him a more attractive principal case .

Instead of being 70 + years old , as he should be according   to the Harry Potter timeline , Dumbledore is played by a youthful Jude Law , who has trade in his older self ’s eccentric clothing vogue for a more bond - like show .

The Mirror Of Performance Issues

The Mirror of Erised is articulate to give away your spirit ’s greatest desire , which is why Harry sees his parent alive and well standing next to   him in the mirror . Rowling   has tell that Dumbledore saw his baby Ariana , active and well remain firm with him .

InFantastic fauna , we see Dumbledore reliving a   sore memory   involving Grindlewald or else . The mirror behave like a Pensieve rather of the magical object we know it to be from preceding picture show .

Dumbledore’s Reason For Avoiding Grindelwald

One of the most tragical revelations about Dumbledore inHarry Potterwas why he avoided push Grindlewald for so long .   It was during a retiring duel with his former skillful champion that Dumbledore ’s sister had die . The retentiveness of that incident , along with the fear of Grindlewald , revealing that he had been personally responsible for her end , made Dumbledore avoid direct confronting him .

Now it has been divulge that Dumbledore and   Grindlewald had made an unbreakable vow never to fight each other , which was why Dumbledore could not campaign the dark wizard forthwith .

Everything About Nagini

Nagini was a giant Hydra that   was Voldemort ’s special pet . She was ferociously and blindly truehearted to him and   was one of the common carrier of a part of his soul . accord toFantastic Beasts ,   Nagini ’s story began decades before Voldemort was even born . In this new plot line , Nagini was a   Maledictus , a human with the ability to transform into a serpent at will .

Somewhere down the argumentation , Nagini will presumably be immobilise for good in her serpent form . That does not explain why we never hear Voldemort mention her former human nature or why Harry , who in short dwell her creative thinker , did not detect the presence of a human being there . It ’s also never break why she turned into a full - fledged villain   when she is establish to be a heroic character as a man .

The Third Dumbledore

In a disgraceful pull that entrust fans scratching their headland ,   Credence is divulge to be Dumbledore ’s young blood brother , an immensely powerful Obscurius   with uncontrolled magical ability . This verbal description better suit Dumbledore ’s vernal sister Ariana , who perished as a result of being ineffective to control her powers in the midsection of a affaire d’honneur between   Albus , Aberforth , and Grindlewald .

It is still not clear whether Credence is definitely a   Dumbledore , or if this is a plot cooked up by Grindlewald , but as of now , a third Dumbledore brother immediately negate Harry Potter canyon .

Accio Works Differently

One of the demarcation line that were localize on magical   spells in Harry Potter was they act other than when applied to living or non - living thing .   For representative , the while Accio is   used to   summon object , but it can not be used to muster up living things .

InFantastic fauna , we   see Newt using the spell to summon a Niffler to himself . Once again , the makers decided to apply an survive spell that audience would palpate aroused to recognize or else of   creating a unexampled one , even if it contradicts older storylines .

Harry Speaking Parseltongue

Harry was famous for being able to speak Parseltongue , the spoken language of serpent ; however , it was after bring out that this was merely a side effect of   having a part of Voldemort ’s individual within him .

Rowling had explicitly tell that once the soul shard was removed , Harry also turn a loss his ability to talk to snakes .   However , in the playHarry   Potter and the Cursed Child , Harry is seen speaking Parseltongue with ease .

Diversifying The Cast

A few years after the   finalHarry Potternovel come out , Rowling let on a gang of things about the series that no one knew . Like the fact that Dumbledore was a gay , Hermione was African American in the raw looseness , and that there were Jewish students at   Hogwarts .

While   all of these are perfectly   acceptable plot point , it was a strange thing that none of these facts ever found credit in any of the film or novels .   Many readers accused Rowling of taste to make her stories more various retroactively and ' woke ' than they actually were .

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