Why Marvel Phase 4 Failed: What Broke the MCU After Endgame

Why Marvel Phase 4 failed to recapture the Infinity Saga comes down to one change inside the machine. The Infinity Saga built characters first and let the universe serve them. Phases 4 and 5 flipped it: the universe became the product, and the characters became its delivery system. Across thirteen breakdowns, the same structural break shows up in different costumes: movies that exist to keep the machine running, gimmicks standing in for characters, homework replacing storytelling, and a formula repeating with diminishing returns.

The Movie That Wasn't About Its Own Hero

The clearest X-ray of the break is Ant-Man and the Wasp: Quantumania, the 31st MCU film. The breakdown's verdict is brutal and precise: "it's not an Ant-Man movie so much as it is another Marvel movie that happens to feature Ant-Man." It wasn't made because anyone had more to say about Scott Lang. It was made because Marvel is a machine in need of another movie, Ant-Man was an available property, and the Quantum Realm was a mandatory CGI world they could put him in.

Watch what that does to the film. Scott Lang loses everything that made him Scott Lang: the ex-con master thief, the dad trying to make things right with his daughter, the ordinary guy pulled into crazy situations. He's just Paul Rudd being Paul Rudd with an Ant-Man gimmick, "a stick in a river carried wherever Marvel wants the river to go." He gets shrunk by someone else, captured by someone else, dragged to the villain by someone else. And the whole thing actually serves someone else: Kang. The film is ostensibly about Ant-Man but structurally about introducing the next big bad, which means it fails at both. Ant-Man is ruined because he's a passive vessel in his own movie. Kang is ruined because he's built from ominous references instead of scenes from his perspective. Compare Infinity War, which went all in on Thanos: it begins and ends with him, shows his choices and sacrifices, brings the audience inside his head. Quantumania wouldn't commit to either hero or villain, because committing wasn't the point. Feeding the machine was.

That is the structural break in one film: when the universe becomes the story, no single story can survive. Run that logic across a whole slate and you get why Marvel Phase 4 failed as a phase, not just as a film: the machine stopped making movies about anyone in particular.

Why Marvel Phase 4 Failed: Gimmicks, Checkboxes, and Universe Obsession

The Marvels might be the most complete specimen of the disease, because the breakdown diagnoses it in three words that apply to the whole phase: gimmicks, checking boxes, and universe obsession.

Start with gimmicks. The villain's entire introduction is: she lands on a planet looking for something, she has a cosmic hammer that belonged to an earlier villain, therefore she's a badass. Her plan involves a cosmic bracelet like the hero's bracelet, therefore it's a big deal. By the end there are five gimmicks active at once, "crushing the villain underneath them." Thanos worked because he was more than his glove, and the stones had value beyond their powers. Here, 90 percent of a character's value is the stuff they wear. The person underneath could be anyone.

Then the checkboxes. Everything feels like a variation on a formula executed at minimum viable quality. The villain: normal soldier, tragic planet event, now after a cosmic MacGuffin to fix things, obsession maybe making it worse. Seen it. The stakes: a planet of people we don't know is being destroyed, so we must go stop it. Seen it. The ending: the villain gets the thing, dies, a rift opens, a hero flies into it and makes a sacrifice. The breakdown's deadpan reaction: didn't Iron Man already do the portal sacrifice in the first Avengers, but with actual character weight? The film is "a product of a machine, a factory machine that keeps repeating the same tasks with diminishing returns."

Then universe obsession, the worst of the three. Characters only make sense if you've done the homework. Ms. Marvel is a fangirl of Captain Marvel, and that's nearly all she is here; to invest in her you'd need her Disney+ show. Monica Rambeau's powers arrive via a witch's hex from WandaVision, summarized in a line. The villain's whole tragic backstory, a civil war that somehow turned off a sun, isn't in the movie at all. "We shouldn't have to watch 40 hours of TV to even have a clue of what's going on." Everything a viewer needs should be in the movie. Direct sequels get some slack. Forty hours of streaming homework does not.

The Homework Problem and the Yo-Yo Villain

Doctor Strange in the Multiverse of Madness shows what the homework problem does to character motivation. Wanda's entire drive, needing America Chavez's powers to reach her children in another universe, means nothing unless you've seen WandaVision. Dreams aren't a foundation for action. Imagine Thanos trying to erase half the universe because he saw himself do it in a dream. Motivation has to be built inside the movie or it isn't built at all.

The film also gives us the phase's signature villain problem: the yo-yo. Wanda massacres Kamar-Taj like an unstoppable force, then stops short of finishing Strange and Wong for no reason the story earns. She wipes out the alternate Illuminati like a horror-movie demon, then idles for an hour instead of taking what she came for. She snaps back and forth between past-the-point-of-no-return and playing nice depending on what the plot needs that minute. "If you make your antagonistic force into a yo-yo whose actions depend on whatever in the moment is necessitated by the plot, you don't have an antagonistic force. You have a slave-like construct of the plot." Thor: Love and Thunder's Gorr does the same dance: he has Thor at his mercy and the axe he came for, and instead of finishing it he trades quips until the heroes escape, because if he acted like the villain he's supposed to be, the movie would end in thirty minutes. The Infinity Saga's villains had checkpoint goals they actively pursued (Thanos collecting stones, the Joker assembling his masterpiece piece by piece). Phase 4's villains wait for the plot to allow them to act.

And then there's Eternals, which the breakdown uses to teach the three cornerstones every blockbuster needs: goal, stakes, urgency. Eternals has ten new heroes nobody knows, no tangible goal (assemble the team to... do what, exactly, and how will we know when it's done?), no stakes (the heroes are so overpowered you can't fear for them, the enemies are so ineffective you can't take them seriously, and the "save the planet" stakes involve a planet of strangers), and no urgency (no deadline, no ticking clock, characters stopping to chat while they could fly). "You're not Endgame. You haven't earned the right to have characters just hang out without active purpose." Infinity War worked because Thanos was coming for the stones right now. Eternals drifts because nothing is coming at all.

The Exceptions That Prove the Rule

Two films in the batch show what the phase could have been, and both prove the diagnosis by contrast.

Guardians of the Galaxy Vol. 3 works because it's built on emotion, not universe. The plot is almost embarrassingly simple: Rocket is dying, the Guardians race to save him. But every character, primary to tertiary, is built on feeling. Rocket gets his own active storyline in flashbacks instead of lying on a table as a prop. Relationships get expanded into triangles and conflicts between allies, not just against enemies. "Conflict is the social drama and drama is the heart of entertainment." It gives hope precisely because it remembers that characters are the machine, not the content.

Deadpool & Wolverine is the other exception, and it's instructive for a different reason: it's "the first MCU multiverse movie in 3 years that doesn't suck," and the multiverse isn't what saves it. The characters do. Deadpool and Wolverine are opposites (unserious jokester, dead-serious grump), so their scenes generate conflict before a word is written. Everyone is pushed to an extreme: Deadpool faces genuine loss for the first time, Wolverine is the worst version of himself getting a last chance. The film knows the multiverse plot is arbitrary nonsense and lets the people carry it. That's the formula the whole phase forgot: characters first, universe second.

Black Widow is the cautionary middle case. It tried to be a gritty Bourne-style spy thriller, and for stretches it works, but its "slave-like ties to the MCU" keep breaking the tone: a secret program operating in the shadows somehow fields a villain in shiny unhideable armor, and the third act devolves from grounded espionage into a floating CGI fortress. The universe didn't just fail to help the story. It ate it.

Key points

• The structural break: the Infinity Saga served characters; Phases 4-5 serve the universe, and characters became content.
• Quantumania is the X-ray of why Marvel Phase 4 failed: a movie about its hero that isn't about its hero, existing to feed the machine and set up Kang.
• The Marvels names the disease: gimmicks instead of characters, formula checkboxes, and universe obsession that demands homework.
• Phase villains yo-yo between unstoppable and harmless depending on plot convenience (Wanda, Gorr).
• Eternals shows what happens with no goal, no stakes, and no urgency: drift.
• The exceptions (Guardians 3, Deadpool & Wolverine) prove the rule by putting characters first.

Try this

• Watch any Phase 4 or 5 film and pause halfway. Write down the hero's personal goal, the stakes, and the deadline in one sentence each. If you can't, you've found the structural break from the inside.
• Watch the first 30 minutes of Infinity War and list every scene where Thanos actively pursues his goal. Then do the same for Gorr in Thor: Love and Thunder. The difference between an active villain and a plot construct will be obvious.
• Take your own franchise or series idea and ask the Quantumania question: if I swapped my hero for a different character, would the story still work? If yes, the story isn't built on your hero, and the machine is already eating it.