25 Fascinating Harry Potter Cast Facts for Fans

Posted by , Updated on March 23, 2024

Are you interested in uncovering some entertaining trivia about the Harry Potter cast? It may be hard to fathom that it has been several years since the final Harry Potter films graced our screens. Our beloved Harry Potter stars have matured and ventured into different projects and career paths. But, while they may have embarked on new journeys, the fanbase remains strong and undeterred. The enduring charm of these films surely ensures their legacy for future generations. Undoubtedly the most dedicated fans possess in-depth knowledge of the Harry Potter universe, but are they privy to the behind-the-scenes secrets? Today, we delve into revealing 25 interesting tidbits about the Harry Potter cast that every admirer would love to know.


Actor Robbie Coltrane, who played Hagrid, got a fruit bat and a mini-fan stuck in his beard.

robbie coltraneSource: https://thestralsbooks.wordpress.com/tag/robbie-coltrane/

The actors who play Mad Eye Moody and Bill Weasley are actually father and son in real life.

brooklynSource: http://thesuperscreen.blogspot.com/2012/08/bill-weasleys-dad-is-mad-eye-moody.html

The actress who played Moaning Myrtle was 37 and 41-years-old when she appeared in two Harry Potter films.

moaning myrtleSource: https://moviepilot.com/p/harry-potter-moaning-myrtle-age/4147764

Despite rumors, the actors who played Fred and George Weasley did not switch places in scenes.

james and oliver phelpsSource: http://www.heraldextra.com/rumor-mill---switching-characters-on-set/image_d1f18c3e-255e-58fe-85e4-fceb3bf2176b.html

On Harry Potter and the Chamber of Secrets, a lice outbreak spread among the young cast.

harry potter chambersSource: http://www.imdb.com/title/tt0295297/trivia

The cat that played Mrs. Norris was actually three cats named Maximus, Alanis, and Cornelius.

mrs norrisSource: http://screenrant.com/harry-potter-filch-mrs-norris-cat-trivia-facts/

Daniel Radcliffe went through 60 to 70 wands throughout the making of the movies.

harry potterSource: http://www.hollywoodreporter.com/news/harry-potter-25-surprising-facts-209338

Daniel Radcliffe also went through 160 pair of glasses.

glassesSource: http://www.hollywoodreporter.com/news/harry-potter-25-surprising-facts-209338

Tonk's hair was changed from pink to purple in the movies to not be connected to Delores Umbridge.

Nymphadora_TonksSource: https://www.pottermore.com/features/behind-the-scenes-nymphadora-tonks

Producers tried to change Daniel Radcliffe's eyes to green, but he was allergic to contacts.

daniel radcliffeSource: http://www.deseretnews.com/top/3325/1/Harrys-eyes-31-things-you-might-not-know-about-the-Harry-Potter-books-and-films.html

Director Chris Columbus gave Emma Watson buck teeth on the first day of filming but removed them later.

chris columbusSource: https://www.thesun.co.uk/living/1974509/the-shocking-thing-you-never-noticed-about-hermione-grangers-teeth-in-the-first-harry-potter-film/

The actress who played Luna Lovegood designed the jewelry she wore on set.

evanna lynchSource: http://metro.co.uk/2017/03/27/heres-why-evanna-lynch-is-just-like-her-character-luna-lovegood-from-harry-potter-6534943/

Rupert Grint has a severe case of arachnophobia; his look of terror and fear during the scene in Aragog's hallow was very real.

rupert grintSource: http://www.imdb.com/title/tt0295297/trivia

The kissing scene between Emma Watson and Daniel Radcliffe was so awkward, Rupert Grint couldn't stop laughing.

harry potter hermioneSource: http://www.j-14.com/posts/emma-watson-kicked-rupert-grint-out-while-kissing-dan-radcliffe-3247

Emma Watson dedicated her Britannia award to her dead hamster, Millie.

emma watsonSource: http://www.telegraph.co.uk/culture/culturevideo/11204956/Emma-Watson-dedicates-award-to-hamster.html

When Gary Oldman first met Daniel Radcliffe, he bought him a bass guitar because he had an interest in music.

sirius blackSource: http://www.pref.com/a/ggn/30-outrageous-behind-the-scenes-stories-from-harry-potternew/p-4

In Chamber of Secrets when Harry was disguised as Goyle, Tom Felton improvised the line, "I didn't know you could read" because he couldn't remember the actual line.

tom feltonSource: https://moviepilot.com/posts/3350199

On one take in the Yule Ball scene, Emma Watson tripped on her dress and fell down the stairs.

Hermione_yule_ballSource: http://www.imdb.com/title/tt0330373/trivia

The actor who played Dudley had to wear a fat suit after shedding much of his weight.

Harry_MellingSource: http://www.independent.ie/entertainment/movies/dudley-had-to-wear-film-fatsuit-26700725.html

Alan Rickman forbade Rupert Grint and Matthew Lewis from going near his BMW after they spilt milkshakes in his old car.

alan rickmanSource: http://www.christianitydaily.com/articles/4512/20150626/what-happened-behind-the-scenes-of-the-harry-potter-films.htm

Love Alan Rickman (RIP)? We do, too! Check out these 25 Facts You Should Know About Alan Rickman.


The hug between Draco and Voldemort in the last film was totally improvised by Ralph Fiennes.

ralph fiennesSource: https://www.hypable.com/tom-felton-speaks-out-about-the-voldemortdraco-hug-at-dragoncon/

Tom Felton's girlfriend, Jade Olivia, also played Draco Malfoy's wife.

jade oliviaSource: http://www.alloy.com/entertainment/jade-olivia-gordon-five-facts-tom-felton-991/3/

Director Mike Newell had no idea Alan Rickman wore black contact lenses while playing Severus Snape.

mike newellSource: https://www.bustle.com/articles/135601-13-things-you-didnt-know-about-alan-rickman-his-most-memorable-roles

On the set of Harry Potter and the Prisoner of Azkaban, Alan Rickman pranked Daniel Radcliffe with a fart machine in his sleeping bag.

severus snapeSource: http://www.mirror.co.uk/3am/celebrity-news/alan-rickman-pranked-daniel-radcliffe-7204659

Daniel Radcliffe admitted to having a drinking problem for a time and came to the Harry Potter sets totally drunk.

daniel radcliffeSource: http://www.telegraph.co.uk/culture/harry-potter/9060794/Daniel-Radcliffe-I-was-drunk-during-Harry-Potter-filming.html

Photo: Featured: Daniel_Radcliffe.jpg: Matthew Blaney from London, UK Rupert_Grint.jpg: John Griffiths from London, United Kingdom Emma_Watson_GoF_Premiere.jpg: Zaheer12a derivative work: Bovineboy2008 (talk), Principal cast of the Harry Potter series, CC BY-SA 3.0 25. clogdancer, Robbiecoltranecrop, CC BY-SA 2.0, 24. GabboT, Brooklyn 01 (21313066278), CC BY-SA 2.0, 23. Photo via twitter (Fair Use: Illustrative Purposes Only), 22. Niccolò Caranti, James and Oliver Phelps – Lucca Comics and Games 2011 – 2, CC BY-SA 3.0, 21. Colin Zhu via flickr. CC BY 2.0, 20. photo via imgur (Fair Use: Illustrative Purposes Only), 19. Pixabay.com (Public Domain), 18. Pixabay.com (Public Domain), 17. Wikipedia Commons.com (Public Domain), 16. Joella Marano, Daniel Radcliffe, 2011, CC BY-SA 2.0, 15. anonymous, Cris Columbus at the Sorcerer’s Stone Premiere, CC BY-SA 3.0, 14. Paul Bird, Evanna Lynch 2012, CC BY 2.0, 13. Joella Marano, Rupert Grint, 2011, CC BY-SA 2.0, 12. ursulakm via flickr. CC BY 2.0, 11. Joella Marano, Emma Watson, November 2010, CC BY-SA 2.0, 10. Ana Clara Moreira via flickr. (Public Domain), 9. Unknown, Tom-felton-net-worth, CC BY-SA 4.0, 8. Harry Potter Wiki (Fair Use: Illustrative Use Only), 7. vagueonthehow, Harry Melling, CC BY 2.0, 6. Marie-Lan Nguyen, Alan Rickman cropped and retouched, CC BY 2.0, 5. gdcgraphics, RalphFiennesSept2013TIFF, CC BY-SA 2.0, 4. Harry Potter Wiki (Fair Use: Illustrative Purposes Only), 3. BrokenSphere, Mike Newell at WonderCon 2010 2, CC BY-SA 3.0, 2. imgflip.com (Fair Use: Illustrative Purposes Only) , 1. Christopher William Adach from London, UK, Daniel Radcliffe 2013, CC BY-SA 2.0