1- Emma Watson has dedicated her Britannia Award to her hamster, who was left with her on the Harry Potter film set and died on set.
2. Daniel Radcliffe admitted that he had a drinking problem for a while and came to the Harry Potter film set completely drunk.
3. Alan Rickman, Rupert Grint, and Matthew Lewis have been banned from approaching their new BMW for pouring milkshakes on their old car.
4. As the scene of Hermione and Harry kissing was filmed, Rupert Grint had to get off the set as he couldn’t stop laughing.
5. Lord Voldemort and Draco Malfoy’s embrace in the final film was an improvisation by Ralph Fiennes.
6. Tom Felton, who portrayed Draco Malfoy in the Film Chamber of Secrets, in which Harry Goyle, with the polytheistic potion, had improvised by saying, “I didn’t know you could read” because he forgot his line.
7. Rupert Grint really had an arachnophobe, and his facial expression in the scenes with Aragog was definitely not an act.
8. When Gary Oldman found out that Daniel Radcliffe had an interest in music, he gifted him with a bass guitar.
9. Tonks’ hair color was changed to purple as the pink color was identified with Dolores Umbridge.
10. Not many people, including Director Mike newel, knew that Alan Rickman wore black lenses when he played Severus Snape.
11. Director Chris Columbus had given Emma Watson false bunny teeth to be the same as Hermione in the book, but then they gave up on the idea.
12. The producers were going to use lenses to turn Daniel Radcliffe’s eyes green, but it turned out that Radcliffe was allergic to lenses.
13. Daniel Radcliffe changed 160 glasses.
14. Daniel Radcliffe changed almost 70 wands as he kept wearing them down constantly throughout the series.
15. Evanna Lynch, who portrays Luna Lovegood, used her own-designed accessories throughout the shoot.
16. Tom Felton’s girlfriend, Jade Olivia, starred as Draco Malfoy’s wife in the final film.
17. The actress, who portrays the whiny Myrtle, was 37 when she first appeared in Harry Potter.
18. During the filming of Harry Potter and the Chamber of Secrets, an outbreak of lice occurred among the child actors.
19. There were actually 3 different cats that played Mrs. Norris: Maximus, Alanis, and Cornelius.
20. Despite all the rumors, the cast members who portrayed Fred and George Weasley did not exchange places with each other in some scenes.
21. The actors who portrayed Alastor “Mad-Eye” Moody and Bill Weasley were father and son in real life. (Brendan and Domhnall Gleeson)