Over the last decade, the Marvel Cinematic Universe has dominated Hollywood. They have made billions of dollars at the box office and have hundreds of millions of fans around the world. It is little surprise then that so many fans delve deep into the Marvel lore and try to come up with interesting fan theories.
With the release of Spider-Man: Homecoming and Avengers: Endgame, the current phase of the MCU is now at an end. With Phase 4 on the horizon, most fan theories now deal with what we can expect to see in the upcoming films. Although there are plenty of wacky ideas, there are some that do actually make sense. All of these theories about the next stage of the MCU could well come true in the next few years.
19 Thanos Accidentally Created The X-Men
Another popular theory is that Thanos may have accidentally led to the creation of the X-Men and other mutants. Using the Infinity Gauntlet uses an incredible amount of power and some fans speculate that this energy could be responsible for activating the X-Gene in the population, leading to them gaining their superhero abilities.
18 Nick Fury Will Find Red Skull
Nick Fury has been absent in many of the more recent Marvel films, leading some fans to speculate that he is involved in a story of his own that will be shown in Phase 4 of the MCU. The theory contends that he will battle against the Red Skull, who has since become the Stonekeeper guarding the Soul Stone at Vormir.
17 The Dark Avengers Are Coming
With the Avengers no longer at their full roster, there have been rumors that the Dark Avengers could make an appearance in Phase 4 of the Marvel Cinematic Universe. The theory contends that, just like in the comics, Norman Osborn will take charge of a SHIELD and then transform it into a new organization known as HAMMER. He then recruits other supervillains to impersonate various heroes so they can carry out their evil plans without suspicion.
16 Doctor Strange Will Deal With The Scarlet Witch House Of M Storyline
With the knowledge that Scarlet Witch is set to appear in the upcoming Doctor Strange movie, fans have come up with an interesting theory. They believe the movie will deal with the House of M comic plot, which sees Scarlet Witch go a little bit crazy and starts altering reality. This could make sense following the death of her lover Vision, leading to her becoming less stable.
15 Shuri Saved Vision From The Decimation
There are lots of theories dealing with Vision and how he might return in Phase 4. The character was destroyed by Thanos when he stole the Mind Stone and did not return with the rest of the cast at the conclusion of Avengers: Endgame. This theory suggests that Shuri may have actually somehow managed to save his consciousness or backed him up before his death, allowing him to be resurrected in the future.
14 A Team Of Young Avengers Will Emerge
At the end of Phase 3 of the MCU, several heroes have been shown to be training or make reference to their children also being heroes. For example, Hawkeye teaches his daughter how to use a bow while Scott Lang mentions that Cassandra looks so big, a possible reference to her becoming the character Stature. Harley Keener has also made multiple appearances, leading fans to theorize that they could all team up to create the Young Avengers in Phase 4.
13 Doctor Doom Will Be The Next Big Villain
Following Disney’s purchase of Fox, Marvel Studios now has access to X-Men and Fantastic Four characters. This would let them also use Doctor Doom. A popular theory is that Doctor Doom will be the next main villain in Phase 4 of the MCU. This would make sense considering how highly comic fans regard him, making him the perfect nemesis in the upcoming films.
12 Namor The Sub-Mariner Might Show Up
Namor The Sub-Mariner is essentially the Marvel version of Aquaman. The company only regained the film rights to the character in 2016 and this has led fans to theorize that the anti-hero could show up in Phase 4. Atlantis has even shown up in previous MCU titles, such as in Iron Man 2, teasing an appearance from Marvel’s oldest character.
11 Black Widow Is Still Alive
Black Widow sacrificed herself during the events of Avengers: Endgame, allowing the soul stone to be taken to Earth so that the superheroes could defeat Thanos once and for all. However, with Captain America returning the soul stone, it could be possible that she was resurrected as the soul for a soul rule has been satisfied.
10 Doctor Strange Will Link Up With Sam Raimi’s Spider-Man
With the announcement of Doctor Strange in the Multiverse of Madness, some fans are speculating that there could be a connection between the film and Sam Raimi’s previous Spider-Man movies. In particular, Daily Bugle editor-in-chief J. Jonah Jameson could how up. This is because the character actually mentioned Doctor Strange as somebody who already exists in Spider-Man 2, linking the two franchises.
9 Silver Surfer And Galactus Are Coming
Now that Disney owns the Marvel properties that were previously under the control of Fox, it means they can introduce characters such as the X-Men and the Fantastic Four. Two characters that fans speculate could make an appearance in Phase 4, possibly in their own movie, are the Silver Surfer and Galactus. This would fit with the cosmic theme that the MCU is moving towards after Avengers: Endgame.
8 Thanos Will Return
Although Thanos was finally defeated at the conclusion of Avengers: Endgame there are some fans who think that the villain could return. There’s plenty of stories in the comics that see Thanos return after defeats and he does have a special relationship with lady Death. This could possibly allow him to be reincarnated or come back some other way to torment Marvel’s heroes once again.
7 Beta Ray Bill Will Appear In Thor: Love And Thunder
One prominent theory is that Beta Ray Bill will be introduced in Thor: Love and Thunder. The character is known to be one of a select few who have been shown worthy enough to wield Mjolnir and is closely associated with Thor and Asgard. With Thor now adventuring with the Guardians of the Galaxy, the theory holds that Beta Ray Bill can take a prominent role in the story.
6 Captain America Will Come Back
At the end of Avengers: Endgame, Steve Rogers returned to the past and lived to old age with Peggy. The fact that he was not explicitly killed off has left a collection of fans wondering about whether he could return at some point in the future. After all, time travel has been shown to be possible and Captain America is just in a different timeline so it could be recovered.
5 Multiple Universes Will Explain The Appearance Of Mutants
The fact that there is a multiverse in Marvel is nothing new but the multiple universes could be used to explain where mutants will come from when they appear in Phase 4. Fans have put forward theories that say that the sudden appearances from the likes of the X-Men will be explained away as them having crossed over from an alternate universe.
4 A Skrull Invasion Is Incoming
Now that Thanos has been taken care of, the Marvel Cinematic Universe is in need of a new threat that the superheroes can rally around to fight. One prevalent theory is that the next big enemy will be the Skrull during a Secret Invasion. After all, the shapeshifting aliens are capable of accurately impersonating other beings and could easily have infiltrated important organizations or even be replicating an important superhero.
3 Guardians Of The Galaxy 3 Will See The High Evolutionary Appear
Very little is known about Guardians of the Galaxy Volume 3. While it is likely that they will be joined by Thor and be searching for the original Gamora. One theory is that the film will feature the High Evolutionary. This mad scientist figure is an expert in genetics and has the power to evolve and devolve lifeforms. The suggestion is that he will ultimately be shown to be responsible for the creation of Rocket.
2 The Eternals Will Explain The Rise Of Mutants
The Eternals, who are essentially a group of celestial beings who are an offshoot of the same evolutionary line that led to humans. In the comics they were responsible for creating the X-Gene, leading fans to come up with a theory that the X-Men and other mutants may be introduced in the upcoming 2020 movie The Eternals. Their appearance will lead to the mutants activating according to this theory.
1 Nova Will Show Up In Phase 4
Many fan theories suggest that Nova will eventually show up in Phase 4. Nova, often known as Richard Rider, is a member of Xandar’s Nova Corps. He eventually becomes Nova Prime and helps stop the Annihilation Wave. His story would make sense considering that the MCU appears to be moving to a more cosmic setting and it would allow viewers to see how Xandar has recovered since the attack by Thanos in Guardians of the Galaxy.
Sources: Reddit.com, CBR.com, MentalFloss.com, Esquire.com,