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Summary
speculate on future events and formulating theories is one of the most rewarding parts of being a fan of theMarvel Cinematic Universe , but sometimes these ideas can lead to dissatisfaction when they do n’t terminate up come dead on target . make the concept of the cinematic universe , Marvel Studios have consistently been amazing at planting seeds of prognosticate that pay off in a big way afterward on , tat their various properties and story with a shared bloodline ofthe MCU ’s persistence . There are few eq to the cinematic catharsis delivered when the series in conclusion know something set up years earlier .
Of naturally , Marvel viewers can sometimes get in front of themselves in look for these big reveals ahead of time , crafting elaborated fan theory that can sometimes be more exciting than the franchise ’s actual plans . Marvel Comics put up a treasure trove of characters , developments , and account beat for eagle - eyed witness to expect out for , and the hearsay mills that whirl behind eachupcoming MCU releasecan tote up even more fuel to the flak of speculation . Sadly , Marvel Studios ca n’t always endure up to the gamy outlook of their audience of millions , leaving many rooter theory ripe for adaptation by the wayside .
10Quake Would Link Secret Invasion To Agents Of S.H.I.E.L.D.
The ABC series wouldn’t get the Netflix treatment.
After the appearance of Charlie Cox ’s Daredevil and Vincent D’Onofrio ’s Kingpin in the MCU , the supposed dissolution ofNetflix’sTheDefenderscontinuitywas re - examined . If Netflix ’s heroes were on the mesa , it would make sense that ABC’sAgents of S.H.I.E.L.D.was before long to follow , and fans of the series were bright for recurring lineament Quake to be introduced to the MCU via Nick Fury’sSecret Invasionminiseries , regard the character featured prominently in the comic of the same name . Tragically , this was n’t the instance , and the ABC show keep to languish as a non - canon side story .
There were several exciting theory lead up to and during Marvel ’s Secret Invasion that would have been better than the factual show itself .
9WandaVision Would Introduce Mutants Into The MCU
The series could’ve gone a long way in bringing the X-Men to the MCU.
With the MCU finally procuring the right to the X - human race only two year prior , looker of Marvel ’s first circumscribed serial on Disney+,WandaVision , were bright thatScarlet Witch ’s world - altering great power could bridge over the gap between universe . The appearing of Evan Peters as Quicksilver in the show only made the idea seemingly more obvious , considering the Maximoff twins had a foot in the worlds of both the X - gentleman and the Avengers . lamentably , the potential difference for the serial publication to convey mutants into the fold was squandered for a joke , uncover Peters ' character as a bare actor .
8Spider-Man Makes A Deal With Mephisto
The Demon king’s long-awaited introduction to the MCU has yet to happen.
One of the most fertile scoundrel in Marvel Comics , Mephisto is a diabolical entity responsible for many of the franchise ’s most vile acts , including the declension of Norman Osborne into the Green Goblin image . With such grave sleeper to Spider - Man , theorists were hopeful that Mephisto would be introduce into the MCU withSpider - Man : No Way Home , as Peter Parker makes a genuine hatful with the devil to repeal the reveal of his secret identity . However , it wasDoctor Strange ' spellrather than Mephisto ’s influence that would alter the human race ’s memories of Peter Parker , save Mephisto at alcove .
Theorists were bright that Mephisto would be bring out into the MCU withSpider - mankind : No Way Home .
7Bruce Banner Would Return In World War Hulk
MCU fans got only the smallest glimpses of the iconic comic storyline.
After the Hulk was ejected into outer outer space following the events ofAvengers : Age of Ultron , it was impossible not to pull parallel between the effect and the start of the famousWorld WarHulkcrossover event . In the comedian , The Hulk is expatriate from Earth by the Illuminati , only to reelect as a seasoned warriorcapable of take on the entire major planet . Thor : Ragnarokgave only the brief glance into the plot line , with teases like Hulk ’s prizefighter armor and the satellite Sakaar , but the level was lamentably never adapted in earnest by the MCU .
6Tom Cruise Would Star As An Alternate Tony Stark
The MCU multiverse didn’t get a lot of mileage out of Iron Man
As the MCU began to introduce the multiverse , rumour start swirling of the opening of Tom Cruise ’s appearance as an alternative Iron Man var. inDoctor Strange and the Multiverse of Madness . Famously , Tom Cruise nearly played Iron Manin lieu of Robert Downey Jr. , which would make his cameo as a variant Tony Stark in the Illuminati incredibly fitting . In the last though , it seems as though Marvel Studios either did n’t care or were n’t able to pander the busyMission Impossiblestar as a cameo appearance , dash the hopes of those wishing to see Cruise in Iron Man ’s armor .
5Heimdall Was The Actual Guardian Of The Soul Stone
The Infinity Stones' locations had fans seeing clues that weren’t there.
go intoAvengers : Infinity War , the only Infinity Stone with an nameless location was the puzzling Soul Stone . Some eagle - eyed fans noticed a fascinating pattern - the location of the other stones virtually spell out " Thanos " , leaving only an " H " to represent the miss Soul Stone . Speculation move rampant that Thor ’s friend and Bifrost Bridge guardian Heimdall could hold the last Harlan Fiske Stone , finish the acronym and explaining the role ’s jaundiced eyes and trick . Arguably , this would ’ve been a more meet net location than Vormir for the Oliver Stone in some ways , as it would ’ve put more system of weights behind Heimdall ’s dying .
Thanos Initial
Soul Stone Location

tetraiodothyronine
Tesseract
henry

Heimdall ( Speculative )
A
Aether

N
Necklace
O

Custom Image by Alex Valentino
Orb
S
Scepter

4The Punisher Showed Up In Captain America: The Winter Soldier
The gun-toting vigilante was rumored for the MCU far earlier than Netflix’s integration.
InCaptain America : The Winter Soldier , Hydra ’s force are at one point restrict by the sudden visual aspect of a icteric Penske truck , t - boning their pursuit vehicles in what seems like a random accident at first glimpse . WhenDirector Joe Russo tease the hand truck driver ’s identity operator , supposedly driven by someone with a " very specific skill set " , The Punisher ’s name chop-chop surfaced . Sadly , nothing ultimately come of this cryptic coquette , representing just another promiscuous ribbon the Marvel Cinematic Universe was never capable to follow up on . The Punisher has still yet to make an on - screen appearance in the MCU .
The Punisher has still yet to make an on - screen appearance in the MCU .
3The Soul Stone Was In Wakanda’s Meteor
The mystical gem would explain much of Vibranium’s fantastic properties.
Yet another proposed location for the mysterious Soul Stone was withinthe massive meteor that give Wakanda its trademark Vibranium deposit , the Harlan Fisk Stone finally being responsible for the country ’s technical prowess . turn over the many magical properties of the mineral , from nigh - indestructibility to the increase of the bosom - shaped herb , an Infinity Stone would n’t be an unreasonable explanation . This would ’ve also explained Thanos ' intrusion of Wakanda in the trailer ofAvengers : Infinity War . It ’s intelligible why the MCU would n’t require to have so many treasure on Earth alone , but Wakanda as the jewel ’s keeper would ’ve made more narrative sense .
2Alexander Pierce Was The Red Skull
Captain America’s old enemy almost made his surprise reappearance much sooner.
The mystery of the Red Skull ’s whereabouts after being beamed aside by the Tesseract inCaptain America : The First Avengerwas a hotly - debated subject for some time , with a leading theory set about to prevail around the time ofCaptain America : The Winter Soldier ’s release . As an enigmatic villain affiliate with Hydra , Alexander Pierce turning out to be a bare character of the Red Skull using another aliveness - same mask to conceal his identity element seemed almost too obvious not to be truthful . Alas , the Red Skull would n’t reappear untilAvengers : Infinity War , and Pierce turned out to be a forgettable political villain .
1Stan Lee Was Old Steve Rogers
A fan theory shockingly close to the truth.
Long beforeAvengers : Endgamehit theaters , rumors of the film ’s focus on time travel breached the containment of Marvel ’s story squad . One pop theory purported thatStan Lee ’s many cameos in MCU filmswere really an old Steve Rogers , checking in on the timeline over the course of his retirement . While Captain America would indeed go on to journey back in time and years into an old human , Stan Lee was confirmed to be a Watcher in theMarvel Cinematic Universethanks toGuardians of the Galaxy : Vol . 2 .





