Pixar movies such as “Up,” “A Bugs Life,” “Brave,” “Toy Story 4” and more seem to be all connected. And it seems that the links are no accident.

Since Disney acquired Pixar at an estimated $7.4 billion years ago, the studio has already produced several successful movies. Some Pixar fans are convinced that the Easter eggs hidden in the films are no accident.

In fact, fans have also created a name for the hidden clues in Pixar films. “The Pixar Theory” was popularized by Jon Negroni, and it states that every Pixar movie is connected one way or another. However, it is important to note that the characters in different films are not directly linked to one another.

According to one fan-made Pixar website, the start of Pixar’s Cinematic Universe is “The Good Dinosaur.” After dinosaurs ruled the earth, humans ruled the world and the movie “Brave” was released. And thanks to the magic of the wisps, people were transformed into animals and inanimate objects were brought to life.

Every single Pixar movie also features hidden Easter eggs. The latest addition to the studio’s projects is “Toy Story 4,” which reportedly has over 100 Easter eggs scattered throughout the film.

One of the Easter eggs hidden in “Toy Story 4” was Ernesto de la Cruz’s guitar from the movie “Coco.” Ellie’s grape soda badge from “Up” was also in the film. P. Sherman’s goggles from “Finding Nemo” is also hidden in one of the scenes in “Toy Story 4.”

Additionally, the cookie box from “A Bug’s Life” was also shown in the animated film. Boo from “Monsters Inc.” also appeared as one of Bonnie’s classmates.

Easter eggs are usually featured in films as an intentional inside joke, a hidden message or image, or a secret feature of a work. The term was created to evoke the idea of a traditional Easter egg hunt, wherein participants go around looking for hidden Easter eggs.

And since they are heavily featured in “Toy Story 4,” Pixar fans can confirm the theory that all movies from the studio are indirectly connected.

Pixar Pixar sets to unveil "The Incredibles 2" in 2018 and "Toy Story 4" in 2019. Twitter