We, Harry Potter fans, are a creative bunch, and we have so many weird fanons [fan fiction canon] and insane theories that to list them all would take forever, but here are some of my favorites.
- The most bizarre I can think of, and my personal favorite, is that Harry never actually left the cupboard under the stairs and actually created the wizarding world as an escape from the trauma of his abusive childhood. Hogwarts wasn't real, but something that his mind created to deal with the pain he was in. There are also similar theories about him being in a coma, in which all the characters are either made up or fellow coma patients around him.
- There is also the theory that is used frequently in fanfiction; that Harry Potter is immortal, due to the terms that the prophecy laid down. "Either must die at the hand of the other." This may imply that Harry can only be killed by Voldemort, and vice versa. Once Voldemort is dead, there is nothing that can truly kill the Chosen One. Thus, Harry has achieved immortality, and can't be killed. Of course, this is introduced mostly with angst and the sorrow of outliving friends and family. Yay.
- And one of the strangest: Albus Dumbledore is actually a time-travelling Ron Weasley. There are parallels between the character: both red heads, both injured left legs, both love sweets. And he always seems to know what's going on: surely this could only be achieved through time travel. Perhaps Ron came back in time to fix the timeline, and ensure Voldemort's defeat? We know time travel is possible in the Harry Potter universe... Obviously, this is pretty crazy — but some people suspect it. Of course, there's the "Dumbledore [is] gay and Ron married Hermione" thing. But that's a minor flaw.
- Ginny dosed Harry with a love potion. I have actually written a fanfiction about this and there are signs of it. We know love potions are legal and widely sold — even by Ginny's brothers. We know Harry has a sudden burst of spontaneous feelings for the youngest Weasley and Ginny was obsessed with him — and Mrs Weasley admitted to using love potions when she was in school. Suspicious... but probably nonsense. And it's chilling when you think of how a love potion would be classified in the muggle world...
- And the most beautiful (and poetic) of all: that JK's seven books are each one of her Horcruxes. She put a piece of her soul in each and now she — and the series — will live forever.
— Quora user Molly Taylor