Many Pixar movies have “easter eggs,” or hidden objects, scattered throughout their many detailed settings, which hardcore fans have analyzed and speculated about for years. These speculations have become known as,”fan theories.” (This term can apply to any fan speculation about a movie based on easter eggs.) Today, the “fan theory” category has expanded to include other fan-made speculations about movies that do not  necessarily cite easter eggs as evidence, of which there are many, according to jonnegroni.com.

One fan theory claims that, in the” Toy Story” movies, Andy’s mother is Emily, the girl who abandoned Jessie, a toy cowgirl and one of the main characters in “Toy Story 2” and 3.  Theorists cite  suspicious similarities between Andy’ hat, which is missing a band around the center (there is a faded mark where it should be,) and Emily’s hat, which has a white band around the center (that is similar in size to the faded mark on Andy’s hat.) Skeptics of this claim remark that Andy’s mom shows no known sign of recognition of Jessie, and vice versa, but the posters in Emily’s room date back to the sixties and seventies, leaving enough time for Jessie and Emily’s memories to fade slightly, and for them to realize and believe that they will probably never see each other again, according to jonnegroni.com

Another popular speculation is that Carl from “Up” actually dies after receiving the court order that he vacates his home. Russell  is supposedly a guardian angel in pursuit of earning his wings, and takes the form of a child because of Carl and Ellie’s desire to have one. Carl’s house then represents his stubbornness to move, its loss at the end of the movie becoming particularly meaningful, according to blog.themascott.com.

One other fan theory has decided from the appearance of Rapunzel and Flynn from the “Tangled” cameo in “Frozen” and the similar animation between the two, that the “Frozen” girls and Rapunzel must have been cousins, although whether the Frozen Queen is related to one of royal couple of Corona (the Queen of Corona is assumed to be sisters with her, as opposed to the King being her brother) or the King of Arendelle is related to them instead (a much more uncommon idea) is still up for debate among both “Tangled” and “Frozen’s” many fans.

Ariel from “The Little Mermaid” has also been added to this crossover concept by linking the aforementioned ship sinking in “Frozen” to the already sunken ship that Ariel explored, leading to the finding of her “dinglehopper” (which is actually a fork, unbeknowst to the seagull who twirls his hair with it) according to cinemablend.com.

Other pieces of evidence that the three movies are related to each other are their settings. “Arendelle,” a fictional kingdom that exists in “Frozen”, has been suggested to  be inspired by the Norweigan town of Arendal around the 16th and 18th centuries, the same time period as the setting for “Tangled”, on the coast Poland or Germany. Ariel’s “Atlantica” would be presumably off the coast of Denmark, since it is based on Danish author Hans Christian Andersen’s “The Little Mermaid.” The, if the ship from “Frozen” was indeed on the way to Corona, it would have to pass Atlantica first, according to www.cinemablend.com.

Many fan theories exist on the internet including “The Pixar” theory, which is analyzed in depth in the Matador Messenger in an article titled “The Pixar Theory : A Timeline that Links all Films.”