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Fan Theories About MCU Weapons And Tech That Make A Ton Of Sense

February 12, 2021 4.4k votes 921 voters 111.9k views15 items

List RulesVote up the most interesting (and believable) fan theories.

If there's one thing that the MCU isn't shy of, it's weapons and technology. When Tony Stark sneezes, he shoots out something amazing that will do your taxes or kill a malevolent sentient robot. It's how the world works in the Marvel Cinematic Universe, and because the movies and TV shows have so many cool gadgets, fans have come up with some pretty fascinating theories over the years.

Many of them have taken to the FanTheories subreddit to share their thoughts on the weapons and technology found in the movies, and a lot of them make sense. The more believable fan theories that have come out about the MCU are listed below. Take a look, and when you find something you think might actually be true, be sure to give it an upvote to see if it makes its way to the top of the list!

  • 1

    Odin Designed The Mold For Stormbreaker In Case Thor Went Rogue Like His Sister

    From Redditor u/JKaro:

    Stormbreaker was a weapon forged for Thor, but not for Thor to wield per se. It was made to handle Thor. Odin knew what had happened with Hela, and the similarities to pre-Thor  movie Thor and Hela were quite similar.

    Vain, warmonger-ish, and conquerors. Odin saw the parallels and knew what he had to do. If Thor ever got out of hand, Odin would have the perfect tool to combat Thor. Not kill him, but break him with a weapon more powerful than Mjolnir.

    An axe made to break the storm.

    Believable fan theory?
  • 2

    The Dwarves Made The Weaponry Of The Black Order

    From Redditor u/Bangersss:

    Nothing is really known about the weaponry used by the Children Of Thanos but their weapons share some properties with other Dwarven weaponry.

    They can be called to return to the users' hands like Mjolnir. Corvus Glaive's Glaive and Proxima Midnight's Trident are both shown flying back towards their owners, out of the hands of the heroes. Cull Obsidian has some level of control over his hammer thing though it is connected by some kind of chain.

    They can resist the power of the Infinity Stones. Just like the Infinity Gauntlet was created to harness the power of the stones, we see the Glaive deflecting and returning an energy blast from Vision with the Mind Stone.

    The Glaive also seriously messes up Vision where nothing had previously been seen to harm him, the only other time we see Vision take damage is from Thanos though he may not have needed the Gauntlet's power.

    So yeah, a few powers inline with other Dwarven gear, I think the Dwarves also made the weaponry of the Black Order when they were forced to make the Infinity Gauntlet.

    Also, no doubt they made Loki's Sceptre too which harnessed the power of the Mind Stone, and possibly even they made the Tesseract containing the Space Stone.

    Believable fan theory?
  • 3

    Odin Conquered The Nine Realms With The Infinity Stones (Minus The Soul Stone)

    From Redditor u/bubonis:

    Years and years ago, Odin learned about the Infinity Stones through his father, Bor, who was responsible for taking the Reality Stone from the Dark Elves. After his death and Odin's subsequent rise to power, he (with Hela at his side) began conquering all the realms in order to locate and claim the Stones. Odin found the Space Stone first and this allowed Odin and his armies to travel between realms and conquer them very quickly. the Bifrost is essentially an Asgardian reproduction of the power of the Space Stone (EDIT: Never mind that bit.) During this he commissioned Nidavellir to create a device that would allow him to control all the Stones at will: the Infinity Gauntlet. They created the mold for it and made one casting as a test fit for Odin, complete with fake Stones to give Odin an idea of the grandeur of the finished Gauntlet.

    However, at about this time he discovered the whereabouts of the Soul Stone and what was required of him to get it: He'd have to sacrifice that which he loved the most, which was Hela. He found he couldn't do it and in that moment Odin stopped being a conquerer and started being a king. Hela didn't understand this change of heart; she knew what the Infinity Stones were because Odin specifically told her that's why they were conquering all the realms, and Hela believed in that power more than anything else. So she and Odin fought; Odin won and that's when he imprisoned her in Hell. Odin put the fake Gauntlet in his treasure room as a reminder of both what he'd done and what he'd lost, and swore that he would protect all that he had conquered. Thus he became Odin Allfather, Protector of the Nine Realms. Nidavellir decommissioned the Gauntlet mold and Odin hid the Space Stone on Midgard. Odin almost definitely knew where the Reality Stone was because Odin's father had it at one time. If this theory is true then he definitely knew where the Soul Stone was, he might have known where the Power Stone was, he probably didn't know the Time Stone was also already on Midgard (otherwise he likely wouldn't have risked two Infinity Stones in the same place), and he almost definitely didn't know where the Mind Stone was.

    When Thanos arrived on the scene and went to Nidavellir to have them forge a control for the Stones, they used their previous knowledge from Odin's Gauntlet to make one for Thanos.

    If this theory were true then it explains how and why Odin was previously a conquerer and why he changed; why there's a fake Infinity Gauntlet in Odin's treasure room; how Hela knows it's fake; how Hela knows what the Tesseract is ("That's not bad," she says while giving a small pause in front of it); why Odin changed from conqueror to king; why Odin and Hela fought; and why Thanos' Gauntlet is basically the same as the fake Gauntlet at Asgard.

    EDIT/BONUS 1: I thought of something else. Odin may have used the Space Stone to banish Hela to Hell, which may be considered unnatural since Hell isn't supposed to be for living beings. That being the case, Odin "tampered with natural law" and the bill came due by way of the Ragnarok prophecy. The destruction of Asgard may have been the universe's way of balancing itself out.

    EDIT/BONUS 2: And another thing... Odin himself said that Thor was stronger than him. You could argue that "young Thor" is stronger than "old man Odin" and you'd probably be right, but what if Odin meant that Thor is always stronger than Odin? That Odin in his prime couldn't have beaten Thor? If that's true then the question becomes: If Thor is always stronger than Odin, and Thor couldn't defeat Hela, then how did weaker Odin defeat Hela? A possible answer is that Odin held the Space Stone. Odin's power, amplified by the abilities and power of the Space Stone, may have been enough to tip the fight Odin's way.

    Believable fan theory?
  • 4

    Peter's Universal Translator Doesn't Understand Groot Because He Speaks A Dead Language

    From Redditor u/mariofan366:

    So we see that Thor knows Groot due to an elective on Asgard. However's Quill's universal translator can't understand Groot, Rocket has to translate it. Why?

    I've seen an idea on how Groot is hard to translate for a machine because all the language is on inflection and accent but I have another idea. So think about characters from the Guardians of The Galaxy. Gamora is the last of her race (Infinity War retconned this so never mind). So is Thanos. No one is like Rocket. Nebula is unique. Ego is a celestial and Quill is the only half-celestial of Ego. I don't know about Drax, Mantis, or Yondu (isn't Yondu genetically engineered? Edit: no he isn't). Is it odd to think Groot is the last of his race? No, in fact he is the last of his race in the animated series. Ronan wipes out all the Groots and Groot is the only survivor.

    Also Groot is quite big, like 7 feet and 550 pounds or so using on-screen data from the first GG movie. Bigger creatures tend to have longer lifespans. Also, some trees have lived for thousands of years. Groot could very well be quite old. Now we know Thor to be 1500 years old which means his Asgardian elective was about 1500 years ago about. What I wager is that during Thor's schooling years Groot was an abundant and popular language. Then at some point, the Groots got wiped out in some event, and Groot became the lone survivor or one of a few survivors. Groot suddenly became a dead language. When the universal translators were designed, they added tons of languages but not Groot because they thought it was no longer spoken or too rarely spoken to add to the software. Also damn Thor has some good memory, I can barely remember anything from my 3 years of Spanish.

    Believable fan theory?