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One of the reasons the MCU has been so successful over the years is that this shared universe leans heavily on the comic book source material. These movies arent usually direct adaptations of any one comic, but they always draw on iconic storylines and runs and make that classic material accessible to a wider audience. Avengers: Doomsday and Avengers: Secret Wars will be no exceptions. These upcoming movies are inspired by both the original 1984 crossover Marvel Super Heroes Secret Wars and 2015s Secret Wars. More From the MCU: How Many Minutes of Screen Time Can Each Avenger Really Get in Doomsday?But thats just the tip of the iceberg. Now that we know the main cast of Avengers: Doomsday, were getting a clearer picture of which Marvel Comics storylines are inspiring this epic MCU adventure. From epic crossovers like Avengers vs. X-Men to the debut of the Illuminati to two different versions of Secret Wars, these are the 75 Marvel comics that give us a better idea of what Avengers: Doomsday and Avengers: Secret Wars are about. The Most Surprising Avengers and Marvel Characters Not Announced for DoomsdayTime Runs Out for the AvengersAs seen in: The Avengers Vol. 5 #35-44, New Avengers Vol. 3 #24-33 (2015)Again, Avengers: Doomsday and Avengers: Secret Wars are heavily inspired by the two Secret Wars comics. This much we know from Kevin Feige and the Russo Bros. themselves, who are coming back to Marvel direct the films. But while well get to Secret Wars itself in a bit, its worth starting out by focusing on the long, dramatic buildup to the 2015 comics version. That storyline, Avengers: Time Runs Out, will probably end up informing the plot of Doomsday as much as anything else.From the beginning, Jonathan Hickmans Avengers and New Avengers titles deal with the concept of Incursions, that phenomenon where two parallel versions of Earth begin to collide and threaten to annihilate both universes unless one of the Earths is destroyed. The Incursions are revealed to be a symptom of a larger disease in the Marvel multiverse, one that seems destined to end in the complete obliteration of all existence.Time Runs Out takes place in a particularly dire period for the Marvel Universe. Incursions are occurring more and more frequently, making the fight to stop them and save Earth-616 truly an existential crisis. Unfortunately, Time Runs Out also occurs in a period when the Avengers are more divided than theyve been since the events of 2006s Civil War. Once again, there are basically two opposing factions in this ideological battle. One law-abiding team of Avengers serves under S.H.I.E.L.D., while another group follows the Illuminati and their more pragmatic approach to survival.Of course, Time Runs Out is more than just an Avengers story. Members of the X-Men and Fantastic Four also play key roles. And then theres Doctor Doom. Doom is revealed to be a pivotal player in the conflict, as he takes on a new identity as Rabum Alal and attracts a cabal of fanatical followers. Dooms war with the extra-dimensional entities known as The Beyonders is the source of the multiverses impending collapse. He sees himself as the savior of existence. Others might disagree.Weve already seen some plot threads inspired by Time Runs Out crop up during the Multiverse Saga. Thanks to the post-credits scene in 2022s Doctor Strange in the Multiverse of Madness, we know Benedict Cumberbatchs Stephen Strange has joined forces with Charlize Therons Clea to investigate the Incursion problem. And an Incursion forms the crux of the climax of 2023s The Marvels, resulting in Teyonah Parris Monica Rambeau becoming stranded on Earth-10005, a world where Kelsey Grammers Beast and the rest of the X-Men are making their own stand against Incursions.If Avengers: Doomsday is an adaptation of any one Marvel story, its definitely going to be Time Runs Out. If Avengers: Doomsday is an adaptation of any one Marvel story, its definitely going to be Time Runs Out. Were sure to see the Incursion problem reach critical mass, prompting a desperate race to stave off the end of all things. Like in the comic, we may see the Avengers split down the middle in how they deal with this threat. Though in this case, we suspect well see one team rally around Anthony Mackies Captain America and another around Robert Downey, Jr.s Doctor Doom. And again, well see the Fantastic Four and the X-Men drawn into the fray as everyone races to save their respective world. But if Doomsday is anything like the comic, its all going to be for naught in the end.Meet the IlluminatiAs seen in: New Avengers - The Illuminati #1-5 (2006)In the buildup to Marvels Civil War crossover, readers first met the Illuminati, a shadowy group that included Iron Man, Doctor Strange, Mister Fantastic, Namor, Black Bolt, and Professor X. It was revealed that this group has been quietly manipulating events in the Marvel Universe for years, always in the name of protecting Earth from threats both within and without. Marvels New Avengers: The Illuminati miniseries explores the groups actions in much greater depth. Though they eventually disbanded, the Illuminati were reformed in Hickmans Avengers run. The slightly revamped roster included new members like Black Panther, Beast, and Hulk (who was going through an unusually intelligent phase at the time). The Illuminati are also prominent players in Time Runs Out, resorting to questionable measures to protect Earth-616 from Incursions.We already met one version of the Illuminati in the MCU in Doctor Strange in the Multiverse of Madness, a group based on Earth-838. Unfortunately for them, they didnt survive their run-in with Elizabeth Olsens Scarlet Witch.But could we meet the Earth-616 version of the Illuminati in Avengers: Doomsday? Its hard not to come to that conclusion based solely on the cast list. What happens when you get Patrick Stewarts Professor X, Pedro Pascals Reed Richards, Tenoch Huerta Mejas Namor, and Letitia Wrights Black Panther in the same room? We even have to wonder if Downeys Doom could take the place of Tony Stark here. As in the comic, we may see the Illuminati stoop to any and all measures to save their universe, even if it means damning themselves in the process. The Avengers vs. the X-MenAs seen in: Avengers vs. X-Men #1-12 (2012)Normally, the Avengers and X-Men are allies in the never-ending fight to defend the Marvel Universe. But the two teams became bitter enemies in 2012s Avengers vs. X-Men storyline. AvX comes at the tail end of a long period where the X-Men are fighting a losing battle to protect the mutant race from extinction. When it becomes apparent that the Phoenix Force is back and making a beeline for Earth, the X-Men see it as their last, best hope to restore the mutant population. The Avengers, however, see the Phoenix Force as a clear and present threat to everyone on Earth. Thats when the two teams come to blows.PlayWeve already done a deep dive into Avengers vs. X-Men and the ways in which it could inspire Avengers: Doomsday, but the gist is that we could see a very different take in the MCU on the concept of the two teams going to war. Were not expecting a close adaptation of the comic book crossover, as the X-Men havent even been properly established in the MCU yet.Instead, we think Doomsdays AvX conflict would involve the multiverse. It stands to reason that Grammer is reprising the same version of Beast we saw in The Marvels post-credits scene, and that all the other X-Men confirmed for the film are residents of that same world, which were assuming is Earth-10005, a.k.a. the Fox X-Men movie universe. Eventually, Earth-616 and Earth-10005 will be linked together by an Incursion, forcing the MCUs Avengers to battle the Fox universes X-Men for the fate of their respective worlds. In that sense, the Avengers vs. X-Men conflict in Doomsday will probably be less inspired by the AvX crossover than it will the first chapter of 2015s Secret Wars comic. In Secret Wars #1, the Marvel multiverse is reduced to just two remaining universes, the classic Marvel Universe and the Ultimate Universe. The Avengers and Ultimates go to war as the final Incursion breaks out, only for both worlds to be annihilated in the end. Doomsday may very well end in a similar battle between the Avengers and X-Men. Instead of working together to save the multiverse, theyll be too busy fighting each other. And thats where Secret Wars comes in. The Secret Wars BeginAs seen in: Marvel Super Heroes Secret Wars #1-12 (1984), Secret Wars #1-9 (2015)At this point, we might as well talk about Secret Wars proper and how its likely to influence both Avengers: Doomsday and Avengers: Secret Wars. As we mentioned earlier, Marvel has published two separate but not entirely unconnected Secret Wars comics, the first in 1984 and the second in 2015. The Russos have confirmed that both comics are an influence on their upcoming Avengers movies, though were definitely sensing more of the latter Secret Wars so far. PlayIn the original Marvel Super Heroes Secret Wars, a whos who lineup of Marvel heroes and villains are abducted by a godlike being known as The Beyonder. He whisks them away to an artificial planet called Battleworld to fight for his amusement. In the end, Doom steals The Beyonders power for himself, temporarily achieving the strength to match his boundless ego. Marvel Super Heroes Secret Wars is also notable for introducing Spider-Mans black costume and paving the way for Venom. 2015s Secret Wars, meanwhile, serves as the climax of Hickmans sprawling Avengers run. Weve already covered how the first issue features a desperate, doomed battle between two teams of heroes as the multiverse collapses around them. But the real meat of Secret Wars is in what happens next. Even as the multiverse itself dies, Doom and his ally Molecule Man (a key player in the original Secret Wars crossover) make their final stand against The Beyonders. Doom steals their power and becomes omnipotent. He uses his newfound power to form a new Battleworld out of the broken fragments of dozens of dead universes. Doom then crowns himself God Emperor of Battleworld, with each realm controlled by a different Baron. Its sort of the Marvel version of Dune or Game of Thrones. Were expecting to see Downeys Doom achieve ultimate power and form Battleworld out of the ashes of the multiverse. As Secret Wars unfolds, Doom fights to hold his new kingdom together while a group of refugees from Earth-616 seeks a way to restore the multiverse. Fittingly, it all comes down to a final confrontation between God Emperor Doom and his greatest rival, Reed Richards. Even as a god, Doom cant move past his hatred for Reed and his own self-loathing.We dont know how much, if at all, were going to see the two Secret Wars storylines adapted in Doomsday, but Avengers: Secret Wars is shaping up to be a fairly close adaptation of those comics. Once again, were expecting to see Downeys Doom achieve ultimate power and form Battleworld out of the ashes of the multiverse. Well probably see a great many realms inspired by both the comics and various Marvel movies of years past. Well almost certainly see a motley team of heroes band together to restore the multiverse, including both MCU mainstays and iconic movie favorites like Hugh Jackmans Wolverine and Tobey Maguires Spider-Man. If youre wondering how Marvel could ever top the fanboy glee of the portals sequence from Endgame, thats how.All Hail Emperor DoomAs seen in: Marvel Graphic Novel #27 - Emperor Doom (1987)While the MCU is definitely drawing a lot of inspiration from Hickmans Avengers run and Secret Wars for its portrayal of Doctor Doom, its worth taking a look at a much older story that also revolves around Doom crowning himself emperor. That story is 1987s Emperor Doom graphic novel.Emperor Doom shows us what happens when Doom finally grows tired of ruling one measly country and sets his sights on the entire planet. After harnessing the mind-controlling powers of Purple Man, Doom brainwashes the nations of the world into accepting him as their monarch. With no one to oppose him, Doom ushers in a new era of peace and prosperity. Life under Emperor Doom is actually pretty swell, so long as you dont mind the total lack of free will. It falls on Wonder Man to free the Avengers and mount a resistance against Emperor Doom.Marvel is also currently exploring a similar concept in the One World Under Doom crossover, which again sees Doom crown himself Emperor of a surprisingly docile and grateful planet.Could we see elements of Emperor Doom when it comes to Downeys version of the iconic villain? Its definitely possible. The Russos have made it clear that Doom is someone who sees himself as the hero of his own story. He thinks hes doing what has to be done to save the Marvel multiverse. Maybe well see him crown himself emperor in Avengers: Doomsday, rallying the entire world to his cause. We suspect a great many people in the MCU would be only too happy to pledge their life to a guy with Tony Starks face. Doctor Doom as Iron ManAs seen in: Infamous Iron Man #1-12 (2016)To be honest, were still trying to wrap our heads around the surprise reveal that Downey has been cast as Doctor Doom. Why bring back the most recognizable MCU actor to play a completely different character? Whats the significance of the fact that Doom looks like Tony Stark? Is he a version of Tony from another universe where things worked out differently, or is he merely using Tonys face to further his own agenda?Those are all questions we probably wont see answered until Avengers: Doomsday hits theaters. But it certainly cant hurt to look at one of the comics that explores the Iron Man/Doctor Doom relationship in greater depth. For that, we recommend looking at 2016s Infamous Iron Man, part of Brian Michael Bendis' larger Invincible Iron Man run. This series is set after the events of 2015s Secret Wars. No longer a God Emperor, Victor von Doom has been healed in body and soul. Hes determined to prove himself a hero worthy of the mantle of Iron Man. And because Tony Stark himself is comatose at this point, theres no one to actually stop Doom from giving it an honest go.Will Infamous Iron Man have a direct influence on Avengers: Doomsday and Secret Wars? Its hard to say. Though, if nothing else, we wouldnt be surprised if the MCU draws on Dooms character design in this series as it introduces a Tony Stark-ified version of Doctor Doom. Downeys character may look less like the traditional Doom than he does this version that wears a silver and green Iron Man armor.Doom firmly believes hes the hero. But again, we know that Downeys character is someone who sees himself as being in the right. Doom firmly believes hes the hero. There may be elements of Infamous Iron Man that work their way into that portrayal of Doom. Hes a character who needs to win hearts and minds if hes going to carry out his plan of saving the multiverse. Invisible Woman and Namors Sexual TensionAs seen in: Fantastic Four - 1 2 3 4 (2002)With all the spectacle and cosmic stakes going on in these next two Avengers movies, its all the more important they find time to focus on the smaller character moments. They need to be perfectly balanced enough to satisfy even Thanos himself. Avengers: Infinity War accomplished that task by giving us moments of levity between Spider-Man, Iron Man, and Doctor Strange and zeroing in on the doomed romance between Elizabeth Olsens Scarlet Witch and Paul Bettanys Vision. Endgame was basically one long fat joke at the expense of Chris Hemsworths Thor.How will Avengers: Doomsday lighten the mood? We suspect thats going to fall on Namors brawny shoulders. Anyone whos read a Fantastic Four comic featuring Namor will know that the King of Atlantis has the hots for Susan Storm. Heck, he makes Wolverines deep infatuation with Jean Grey seem normal by comparison. Sue, for her part, has never really reciprocated Namors love over the years, but thats never stopped his incessant flirtation. Hey, hes a fish king. Hes not used to being told no.Given that Doomsday is the first MCU movie to include both Vanessa Kirbys Sue and Tenoch Huerta Mejas Namor, we can only assume were going to see this sexual tension play out on the big screen. Expect some of the movies more comedic moments to come as Namor woos Sue and she rebuffs his advances. As for Pedro Pascals Reed? If hes anything like the comic book version, he may be too oblivious to notice. Sue may wind up leading Namor on just to get a rise out of her single-minded science dork of a husband.Again, there are any number of comics the movie could draw from in this area. Namors unrequited love for Sue goes back a long time. But if Doomsday pulls from any one FF comic, wed guess it would be 2002s Fantastic Four: 1 2 3 4. That book, which is unusually dark for an FF story, may be the closest Sue has ever come to actually responding to Namors advances. 1 2 3 4 is also a very Doom-centric story, so that makes it all the more likely the screenwriters might have consulted this hidden gem of a Marvel comic.And there you have it. If you want to do your homework before Avengers: Doomsday hits theaters in May 2026, you know what to read. But what Marvel storylines do you most want to see adapted in these next two Avengers movies? Let us know in the comments.