If you’re into Pixar theories, you’ll mightily enjoy this list and have some fun tidbits for the next trivia throw down. Be warned, though — sure, some of these Pixar fan theories are fun and circuitous, but others can get pretty dark.
For instance, the theory about the witch from Brave being Boo from Monsters, Inc. is only part of one major theory. The fact that Boo the witch is leaving Easter eggs behind in all of the Pixar movies as she searches for Mike is mind blowing. This all ties into Jon Negroni’s super Pixar fan theory that every Pixar movie since Toy Story takes place in the same universe. He even wrote a book about it.
After you discover all of these prominent Pixar movie theories, you’ll be connecting all the dots yourself. And looking for Boo, who is looking for Sulley.
14 Pixar Movies Take Place in the Same Universe
The theory inspired critic and conspiracy theorist Jon Negroni to write a book about a popular Pixar rumor. Negroni’s The Pixar Theory concludes that every Pixar movie since Toy Story (A Bug’s Life; Toy Story 2; Monsters, Inc.; Finding Nemo; The Incredibles; Cars; Ratatouille; WALL-E; Up; Toy Story 3; Cars 2; Brave; and Monsters University) exist within the same universe. Brave explains why animals talk and are motivated like humans.
The Tree Sapling in WALL-E Becomes the Tree in A Bug’s Life
You know that plant WALL-E keeps safe until the humans return? Well, this theory suggests that it becomes the tree in A Bug’s Life and the reason we don’t see any humans in that film is that the Earth has yet to repopulate.
We’re Watching Carl’s Journey To Ellie In The AfterlifePhoto: Up / Pixar
This theory will make an already sad movie even sadder. The theory holds that Carl passes in the beginning of the film, and we’re watching him being escorted by a tiny angel to Ellie, who's waiting for him in the afterlife.
Boo From Monsters, Inc. Is The Witch In BravePhoto: Pixar
Boo loved Sulley and when she grew up, she set out to find him. She used those same doors to travel through time, all the way back to the time of Brave, where she discovers the origin of the will-o’-the-wisps. The carving of Sulley is a big hint that the witch is Boo. Oh, and she’s been to the Toy Story world as well, which explains the Pizza Planet carving.