Frozen fans are only just realizing who Anna and Elsa's secret brother really is.
We all know that Disney loves to interlink their movies in creative ways - I mean, people are still reeling after working out who Andy's mom from Toy Story is.
There are plenty more Disney theories floating about on the internet, but this one has been confirmed by Frozen director Chris Buck.
It links 1999's Tarzan - which follows the titular character's coming-of-age journey after being raised by a pack of mountain gorillas - and the Frozen franchise.
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In the former, we're introduced to Tarzan's parents who get shipwrecked on a jungle island and are tragically killed early on by a leopard named Sabor.
Baby Tarzan miraculously survives.
However, one fan theory would suggest it wasn't just Tarzan who his parents left behind, as he also had two siblings.
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That's right - people think Tarzan is actually the brother of Frozen's Anna and Elsa.
In Frozen, viewers are told Anna and Elsa's parents were lost in a shipwreck at sea, but fans reckon that they didn't actually die but instead survived and washed up somewhere where they had a child, a baby boy, before finally meeting their fate with Sabor.
Yep, that means that Anna and Elsa's mom and dad, Queen Iduna and King Agnarr, are also Tarzan’s parents.
Chris Buck - who directed Tarzan and both Frozen movies - confirmed this theory in a 2015 interview with MTV News.
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"Of course Anna and Elsa's parents didn't die," he explained. "Yes, there was a shipwreck, but they were at sea a little bit longer than we think they were because the mother was pregnant, and she gave birth on the boat, to a little boy.
"They get shipwrecked, and somehow they really washed way far away from the Scandinavian waters, and they end up in the jungle. They end up building a tree house and a leopard kills them, so their baby boy is raised by gorillas."
He continued: "So in my little head, Anna and Elsa's brother is Tarzan - but on the other side of that island are surfing penguins, to tie in a non-Disney movie, Surf's Up. That's my fun little world."
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Buck added: "I say, whatever people want to believe, go for it. If you want to tie them all together, then do it. That's the spirit of Disney."
Reacting to the theory on X, one fan said: "Mind blown" as another wrote: "The connections though!"
But people have since taken to Reddit to point out a number of holes in Buck's theory.
Posting a photo of Anna and Elsa's parents and Tarzan's, one person said: "These two couples are NOT the same people. Forget the fact that their features, hair color and overall character designs don't match at all, did Chris forget that Elsa's parents are Scandinavian while Tarzan's are British?"
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Another added: "Not only that, we see their ship capsize in the ocean, whereas Tarzan’s parents escape a burning ship."
Meanwhile, someone else pointed out that the movies' two timelines simply don't add up.
They said: "Frozen is set sometime in-between 1830 and 1840. While Tarzan is set in the early 1900's. It just isn't possible, unless Tarzan is 70 at the time he meets Jane..."
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But the poster shared another likely theory: "I do believe in the theory that the shipwreck that Ariel explores was once the ship that the parents from Frozen were on.
"The Little Mermaid is most likely set in the mid 1800's, maybe between 1840 and 1850."
Topics: Disney, Film and TV, Nostalgia
Ellie Kemp