This website was inspired by Jon Negroni's article 'The Pixar Theory'. and his fascinating insights on all pixar films therefore it is blatantly obvious that there will be lots of spoilers!

For the best experience, please make sure you have seen every pixar film before reading this article.

What if I told you that every Pixar film occurred in the same universe? That possibly every adventure of Buzz and Woody happened only a couple blocks away from Boo’s house? Well let’s not waste time and dive straight into this theory;

We start with Merida, a princess of a Scottish kingdom set in the dark ages. Within the film, she discovers magical wisps that lead her to a powerful witch.

The point of this theory is to have fun and exercise your imagination while simultaneously finding interesting connections between these fantastic movies. If you hate fun and,or imagination, you probably won’t like this theory.

Furious at her mother for forcing her into an arranged marriage, she strikes a deal with the witch to make her a potion that would solve her issue.

The film never reveals the witch’s identity, but later on she would play a huge role in supporting this theory, so make sure you remember her!

We found out later that the potion goes horribly wrong and turns Merida’s mother into a bear; but despite her colossal appearance, she is still able to possess human qualities and thoughts.

This is one of the only Pixar films to reveal why some animals are able to behave like people; we know that through the witch’s magic, animals and even inanimate objects such as brooms are able to possess human-like intelligence and behaviour.

Does this caravan look familiar? Rollover the image with your mouse to find out!

Monsters Inc A Bug's Life

Many centuries later, many of these animals would have interbred, resulting in a widespread ‘population of animals gaining personification and intelligence on their own.’

This incident could have to led to the creation of our favourite characters in Findng Nemo, A Bug’s Life, Up and Ratatouille.

In Ratatouille, we see animals experimenting with their growing personification in small, controlled experiments.

Remy wants to cook, something only humans explicitly do. He crafts a relationship with a small group of humans and finds success.

It’s possible that Charles Muntz, the antagonist of Up, learned of this startling rumor, giving him the idea to begin inventing devices that would harness the thoughts of animals, namely his dogs, through translator collars.

Those collars indicated to Muntz that animals are smarter and more like humans than we think. Now that humans have discovered the potential of animals, they are beginning to cross the line, hinting at a brand new technological revolution.

  • Carl and Ellie's postcard to Andy

    Here's an easter egg from Toy Story 3 - Andy has a postcard from Carl and Ellie (protagonists of Up) pinned onto his wall

In the beginning of Up, Carl is forced to give up his house to a corporation because they are expanding the city.

Think on that.

What corporation is guilty for polluting the earth and wiping out life in the distant future because of technology overreach?

Buy-n-Large, a corporation that runs just about everything by the time we get to Wall-E. In the “History of BNL” commercial from the movie, we’re told that BNL has even taken over the world governments and has achieved global dominance. Interestingly, this is the same organization alluded to in Toy Story 3;

In Finding Nemo, we have an entire population of sea creatures uniting to save a fish that was captured by humans. BNL shows up again in this universe via another news article that talks about a beautiful underwater world.

  • Buzz Lightyear runs on BNL batteries!

    Buzz Lightyear runs on BNL battery!

  • BNL and its influence in the futuristic world of Wall E

    The influence of BNL in the futuristic world of Wall E

  • BNL on jumboscreen in the world of Cars

    BNL being advertised on jumbo-screen in the world of Cars

Lines are being crossed. Humans are beginning to antagonize the increasingly networked and intelligent animals.

Think about Dory from Finding Nemo for a second. She stands apart from most of the other fish. Why? She isn’t as intelligent. Her short-term memory loss is likely a result of her not being as advanced as the other sea creatures, which is a reasonable explanation for how rapidly these creatures are evolving.

Some great users have pointed out that Dory is actually more intelligent and shows signs of growth due to her ability to read and communicate with whales. This would actually show signs of how the animals are beginning to change in intelligence gradually.

And that is the furthest movie in the “animal” side of things. When it comes to A.I., we start with The Incredibles. Who is the main villain of this movie? You probably thought of Buddy, a.ka. Syndrome, who basically commits genocide on super-powered humans.

Or does he? Buddy didn’t have any powers. He used technology to enact revenge on Mr. Incredible for not taking him seriously.

And how does he kill all of the superheroes? He creates the omnidroid, an A.I. “killbot” that learns the moves of every super-human and adapts. When Mr. Incredible is first told about this machine, Mirage mentions that it is an advanced artificial intelligence that has gone rogue.

Mr. Incredible points out that it got smart enough to wonder why it had to take orders. The omnidroid eventually turns on Syndrome, and starts attacking humans in the city. Why would an A.I. want to just attack randomly? Do machines have an inherent hatred of humans?

Meanwhile, Pixar is hinting at dissatisfaction among pockets of toy civilizations. The toys rise up against Sid in the first movie. Jesse resents her owner, Emily, for abandoning her; Lotso Huggin’ Bear straight up hates humans by the third movie. Toys are obviously not satisfied with the status quo, providing a reason for why machines and objects alike are ready to take over.

However the A.I. never take over humans by force. Why do you think that is? It’s reasonable to assume that machines did take over, just not as we expected. The machines used BNL, a faceless corporation (which are basically faceless in nature) to dominate the world, starting in the 1960s after the Omnidroid fails to defeat the Incredibles

So machines decide to control humans by using a corporation that suits their every need, leading to an industrial revolution that eventually leads to mass pollution.

Because the machines tip everything out of balance, Earth becomes an unfit planet for humans and animals, so the remaining humans are slowly put on giant spaceships as seen in Wall E.

Meanwhile on Earth, machines are left behind to populate the world and run things, explaining human landmarks and traditions still being prominent in Cars. There are no animals or humans in this version of Earth because they’re all gone, but we do know that the planet still has many human influences left.

An energy crisis occurs in the film, Cars 2, with oil being the only way society trudges on despite its dangers. We even learn that the Allinol corporation was using “green energy” as a catalyst for a fuel war in order to turn cars away from alternative energy sources. That “clean” fuel could have been used to wipe out many of the cars very quickly.

Which brings us back to Wall-E. Have you ever wondered why Wall-E was the only machine in his world that was 'alive'? We know that the movie begins 800 years after humans have left Earth on Axiom.

Could it be that Wall-E’s fascination with human culture and friendship with a cockroach is what allowed him to keep finding fulfillment and the ability to maintain his personality? We learn in Toy Story that toys need human love to stay sentient, could this have been the reason why Wall E was awake whereas other models were not? .

Could it be that Wall-E’s fascination with human culture and friendship with a cockroach is what allowed him to keep finding fulfillment and the ability to maintain his personality?

After Wall-E liberates the humans and they rebuild society back on Earth, what happens then? During the end credits of Wall-E, we see the shoe that contains the last of plant life. It grows into a mighty tree. A tree that strikingly resembles the central tree in A Bug’s Life.

There’s something strikingly different about A Bug’s Life when compared to other Pixar portrayals of animals, which leads me to believe it takes place in the future. Unlike Ratatouille, Up, and Finding Nemo, the bugs have many human activities similar to what the rats in Ratatouille were merely experimenting with.

The bugs have cities, bars, advertisements, their own machines, know what a bloody mary is and even have a traveling circus. This all assumes that the movie is in a different time period.

The other factor that sets A Bug’s Life apart from other Pixar movies is the fact that it is the only one, besides Cars and Cars 2, that doesn’t revolve (or even include) humans.

Some claim that the tree from A Bug's Life and Wall E are the same, what do you think?

Credits of Wall E Opening scene of A Bug's life

So what happens next? Humanity, machines, and animals grow in harmony to the point where a new super species is born. Monsters. The monsters civilization is actually Earth in the incredibly distant future.

It's possible that the monsters are simply the personified animals mutated after the diseased earth was irradiated for 800 years

In Monsters Inc., they have an energy crisis because they are in a future earth without humans. Humans are the source of energy, but thanks to the machines, again, the Monsters find a way to use doors to travel to the human world. Only, it’s not different dimensions.

The monsters are going back in time. They’re harvesting energy to keep from becoming extinct by going back to when humans were most prominent. Though a lot of time has passed, animosity towards humans never really went away for animals/monsters

By the end of Monsters Inc, humans, animals, and machines have finally found a way to understand each other and live harmoniously.

And then there’s Boo.

What do you think happened to her? She saw everything take place in future earth where giant bear-like creatures could talk. She became obsessed with finding out what happened to her friend Sully and why animals in her time weren’t quite as smart as the ones she’d seen in the future.

Does this little girl from Toy Story 3 bear any resemblance to someone?

Toy Story 3 Monsters Inc

Do you still remember the witch from Brave? The one that could disappear through wooden doors and possessed unexplainable magic? Well apparently that’s Boo!

Monsters Inc started everything, and as a witch, she cultivates this magic in an attempt to find Sully by creating doors going backwards and forwards in time. (Check out the slideshow beneath to see further proof)

But wait. How did Boo travel in time in the first place, and why is she obsessed with wood? Boo must have discovered that wood has been the source of energy all along, not just humans. The machines and monsters in Monsters Inc. use doors because they’re made of wood and found a way to use that energy to travel in time.

Obsessed with finding Sully, Boo travelled across the Pixar universe using doors. And that’s probably how she ended up in Brave – Dark Age Scotland; probably because she could use plenty of wood there for her experiments or to study the will-o-wisps. We know that her first encounter with Prince Mor’du, ended with her turning him into a monstrous bear.

She probably wanted to turn him into a bear because Sully resembles a bear, and she is still trying to figure out where Sully comes from.

Does Boo ever find Sully? I like to think so. He surely reunited with her at least once as a child at the end of Monsters Inc., but eventually, he had to stop visiting. But her love for Sully is, after all, the crux of and what connected the entire Pixar universe.

  • Boo the witch

    Wooden figures of bears, a possible influence from Sully, and the iconic Pizza truck

  • Carving of Sully in Witch's hut

    A carving of Sully can be found inside the witch's hut

  • The magical portal of the witch

    The witch is able to vanish instantly while going through wooden doors - almost like a portal. Monsters Inc anyone?

In the end – don’t take any of this too seriously; they are simply fun little observations of some wonderful films.

Although what you can do is wait until the next Pixar film is released, and see if there’s anything that could possibly link to this theory. Pixar Animation Studios are notorious for easter eggs and running gags throughout their films.

Be sure to check out Jon Negroni’s article, 'The Pixar Theory’, if you want a deeper analysis of this theory. Hope you’ve enjoyed the read!


  • All images, screenshot grabs are property of Disney Pixar.
  • Screenshot of the witch carving a bear
  • Screenshot of wooden carving of Sully
  • Image of the witch's hut
  • Postcard of Carl and Ellie to Andy
  • Screenshot of BNL logo in Cars short film: Tokyo Mater