When J.K. Rowling created the incredible world of Harry Potter, she inspired a generation. The universe is so extensive, even after you've finished reading the books and watching the movies, there is still plenty of material to dig into. Now, with new content being made available on Pottermore and next year's release of Fantastic Beasts and Where to Find Them, the Harry Potter fandom is experiencing something of a renaissance. With such dedicated fans, it comes as no surprise that theories and speculation are still going strong, even eight years after the final book was released. Without further ado, here are three of my favorite theories.
1. Harry is immortal
This theory is perhaps the most mind-blowing of the three. As you may remember, everyone's favorite Divination teacher, Sybill Trelawney, made a prophecy that would foretell the fate of Voldemort and Harry:
"The one with the power to vanquish the Dark Lord approaches... born to those who have thrice defied him, born as the seventh month dies... and the Dark Lord will mark him as his equal, but he will have power the Dark Lord knows not... and either must die at the hand of the other for neither can live while the other survives... the one with the power to vanquish the Dark Lord will be born as the seventh month dies...."
Long story short, they couldn't both live -- one of them had to kill the other. Now imagine this: what if that was the only thing that could kill them. Voldemort could only be killed by Harry, and Harry could only be killed by Voldemort. Now, with Voldemort dead, there is virtually nothing on the planet that can kill Harry, making him practically immortal.
The theory is a fan-favorite, and if it turned out to be true it would change everything (new Harry Potter books?). However, the theory doesn't explain why Harry is still aging. If he is immortal, what will happen to his aging body? Will he end up looking like a human prune, or can he actually die of old age, just nothing else? For his sake, I hope it's the latter, because being an immortal prune doesn't sound like much fun.
2. The reason Voldemort has no hair
A user on Reddit hypothesized that perhaps the reason Voldemort doesn't have any hair is not merely a fashion choice, but to avoid anyone making polyjuice potion from it. In case you need a reminder, polyjuice potion is a potion that allows the drinker to temporarily assume the form of another person, all you need to add is a hair from the person of your choice. As this might interfere with Voldy's plan of taking over the world, it's understandable that he wants to avoid anyone impersonating him.
I have to admit, it does makes sense, but there is one detail that doesn't add up to the equation: if you want to make polyjuice potion, you don't have to use hair. It can be any other part of someone's body, hair is just what people tend to go for. Perhaps Voldemort figured it's better to be safe than sorry, as it would be much more difficult for someone to get his toe nail than a hair strand.
BONUS THEORY: If a person dies while under Polyjuice Potion, their body will not transform back, and they will still look like the person they impersonated. What if Voldemort made another wizard drink polyjuice potion before the battle of Hogwarts. This would mean he didn't actually die, he is still alive somewhere, and J.K. Rowling will be forced to write more books. Right?
3. Remus and Sirius are totally gay for each other
One dedicated fan of this theory has written an overview of some compelling "proof" that Remus Lupin and Sirius Black were actually more than just friends. The proof in question is a series of quotes from the books, and if you read them now it actually makes sense.
“…It used to be us…me and Remus…and James…”
In this quote, Sirius pairs himself with Remus and adds James as an afterthought.
Ron, Hermione, Fred, and George’s heads turned from Sirius to Mrs. Weasley as though following a tennis rally…Lupin’s eyes were fixed on Sirius.
You have to admit this sounds like someone in love.
Sirius and Lupin had given Harry a set of excellent books entitled Practical Defensive Magic and Its Use Against the Dark Arts…
Notice how they gave Harry a joint Christmas gift, something we most often see couples do.
Sirius was lounging in his chair at his ease, tilting it back on two legs. He was very good-looking; his dark hair fell into his eyes with a sort of casual elegance neither James’ nor Harry’s could ever have achieved, and a girl sitting behind him was eyeing him hopefully, though he didn’t seem to have noticed. And two seats along from this girl – Harry’s stomach gave another pleasurable squirm – was Remus Lupin.
So Sirius doesn't seem to care much for female attention, and instead focuses on Remus.
One might argue that this theory is false because Remus ended up marrying Tonks, who is very much female. However, while Sirius doesn't seem to care for female attention, perhaps Remus was bisexual? After all, Remus and Tonks got married after Sirius died. I don't know about you guys, but I really want this theory to be true!