9. His eyes were a different color in the movie because Daniel Radcliffe couldn't wear contacts
In addition to his black hair, scar, and glasses, the Harry Potter in the books is said to have green eyes. That's an essential part of his Harry Potter charm. But, when making the film, actor Daniel Radcliffe had an extreme reaction to the contact lenses that would've turned his blue eyes green, so a producer called up Rowling to see if they could make the switch. "The only really important thing is that his eyes look like his mother’s eyes," she said. "So if you're casting Lily, there needs to be a resemblance, but they don't absolutely have to be green."
10. A French teenager got arrested on his behalf
At the peak of Potter-mania, there were countless rip-offs, unauthorized sequels, and bits of fan fiction, but nothing beats this 16-year-old French boy who got arrested for translating all 700-plus pages of Harry Potter and the Deathly Hallows into French and then posting it on the internet. That's the type of cunning intelligence that would probably earn him a spot in Ravenclaw if he lived in Potter-world. But in the real world it could get you sent to jail!
11. He will live a very long life
If you're worried that a fictional character will die, you can sleep a little easier: Harry Potter will live for a very long time. No, it's not because Warner Bros. wants to keep raking in more money than you could hold at Gringotts. It's because, according to an interview with Rowling, wizards have a much longer life expectancy than Muggles. You will die, but Harry Potter will live forever. (OK, probably not forever, but for a while.)