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Keep reading to learn 20 surprising facts about controversial author J.K. Rowling's magical series, from how she named her characters to how technology brought the films to life.
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Rowling and Harry Potter share a birthday.
J.K. Rowling and Daniel Radcliffe as Harry Potter.
Getty Images/ Warner Bros Pictures
Rowling gave her characters names that reflect their roles in the series.
The names were carefully chosen.
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You never know when inspiration will strike ― and Rowling jotted down the Hogwarts house names on an airplane vomit bag.
Inspiration hit on a plane.
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Harry Potter was named for his great-grandfather.
This is how it intersects with "Fantastic Beasts."
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The magical plants in the series all come from a real-life compendium of flora.
Mugwort and toadflax are real.
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But only one character in the Harry Potter universe is a figure from Muggle history.
Nicolas Flamel is also a real person.
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Edinburgh, Scotland, where Rowling resides, provided a ton of inspiration for the series.
Even Stephen King was freaked out by Dolores Umbridge.
King was scared by Umbridge.
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Like the multitude of spells in the series, Hogwarts' official motto is also in Latin.
Latin plays a big role in this world.
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The movies featured an animal production team.
There were lots of animals around.
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The "Harry Potter" books have been translated into around 80 languages, from Albanian to Hebrew to Scots.
Harry Potter is available in basically every language.
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It may be hard to imagine someone other than Daniel Radcliffe as Harry, but the role could have been played by another actor.
Haley Joel Osment could have been Harry Potter.
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Peeves, the mischievous Hogwarts ghost, was supposed to appear in the films.
Peeves didn't end up making an appearance in the film.
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But there was a secret, film-exclusive character hidden in the newspaper props designed for the movies.
The Ginger Witch frequented the front page of newspapers.
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When she invented Dementors, Rowling drew from her past experiences with depression.
To Rowling, the Dementors represent depression.
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Rowling planned in advance who would meet a grim fate in the series — but she decided to spare one character's life at the last minute.
JK Rowling changed her mind about killing off Arthur Weasley.
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To prevent early leaks of "Harry Potter and the Deathly Hallows," the series' publisher, Bloomsbury, gave the seventh and final book some quirky code names.
The publisher hoped to keep book leaks to a minimum.
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Evanna Lynch made some of Luna Lovegood's jewelry.
Evanna Lynch as Luna Lovegood.
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Some of the most expensive costumes to make were the Hogwarts uniforms.
Some of the Hogwarts uniforms include silk ties.
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Special effects in the films ranged from green screens to animatronics.
Not all special effects were made in the editing room.
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The Quidditch brooms weren't your run-of-the-mill props.
The brooms had to be sturdy enough to be ridden.
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Some of the food on set was real.
Sometimes the cast of "Harry Potter" actually got to feast.
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