Marvel's One World Under Doom Crossover Ends With a Major Death and a New Sorcerer Supreme

Marvel Comics has finally wrapped up One World Under Doom, its major crossover event series for 2025. This series has seen Doctor Doom, now wielding the power of the Sorcerer Supreme, proclaim himself emperor of the entire world. And much to the chagrin of the Avengers and Fantastic Four, it turns out a whole lot of people are perfectly happy living under Doom's iron-fisted rule.
But how does this epic crossover end? Is Doom victorious, or have Earth's Mightiest Heroes finally found a way to topple their new emperor? Who lives, and who dies? And who holds the mantle of the Sorcerer Supreme now? Let's break down everything you need to know about One World Under Doom's final chapter.
Warning: Full spoilers ahead for One World Under Doom #9!

One World Under Doom's Major Death
The entire series has seen Earth's heroes wage a losing battle against Emperor Doom as they face a new world order where superheroes are no longer really necessary. Doom may be an all-powerful fascist, but he's also ended crime and poverty, erased political borders, and ushered in universal health care. A lot of people are perfectly happy making that tradeoff, even after the discovery that Doom has enslaved the people of Latveria to make his new utopia possible.
In order to cement his rule, Doom launched one final attack in issue #8 - a spell designed to turn his rise to power into a fixed moment in time that can't be undone. Unfortunately, that attack resulted in one major piece of collateral damage. His goddaughter Valeria was killed.
For those not familiar with the two children of Mister Fantastic and Invisible Woman, Valeria is the one living person Doom genuinely cares for. He loves her as much as he despises her father. Naturally, Doom can't abide the thought that Valeria has died by his hand.
Doom uses his immense magical powers to travel to other planes and seek out gods who can resurrect Valeria. The Vishanti prove indifferent to his plight, so Doom then seeks out the most powerful cosmic god of them all - the Living Tribunal. Doom's offer is simple. He'll give anything in exchange for restoring Valeria's body and soul.
Initially, the Tribunal is unimpressed, thinking Doom has nothing of value to offer. But when Doom offers to open up his soul to the Tribunal's omniscient sight for the first time ever, the god detects something he never expected. Selfish and narcissistic though he may be, Doom is genuinely motivated by love above all else. Valeria is restored to life, and Doom is left to pay the price.
With Doom missing, the world abruptly reverts back to the status quo. The old leaders are once again in charge, and the old borders are in place, though not without millions of relocated people suddenly finding themselves without homes. Tensions are high, with many still yearning for the peace and prosperity that Doom created. And many of them directly blame Earth's heroes for ruining a good thing.
Issue #9 ends with Reed tinkering in his lab and being paid a visit by Doom. Doom reveals that he's dying, part of the price he gladly paid for Valeria's resurrection. He makes one final request of his old enemy. Not a plea for help, but merely for Reed to "protect my world." With that, Doom's body disintegrates, leaving only his mask behind. And inside the mask, Reed finds a shocking parting gift - the last will and testament of Victor von Doom.
Who Is the New Sorcerer Supreme?
Doom becoming the new Sorcerer Supreme was arguably the biggest development to come out of 2024's Blood Hunt crossover, a twist that directly set the stage for One World Under Doom. But with Doom having traded his life for Valeria's, that mantle must once again pass to another.
Logic would dictate that Stephen Strange would reclaim his own title. But just as the MCU is exploring a new status quo where Doctor Strange is no longer Sorcerer Supreme, his demotion in Marvel's comic book universe also seems to be an ongoing plot point. Instead, the final epilogue page in One World Under Doom #9 reveals a brand new Sorcerer Supreme.
Scarlet Witch, already one of the most powerful magicians in the universe, can now lay claim to the tools and powers of the Sorcerer Supreme. Marvel will be launching a new series called Sorcerer Supreme in December, written by Scarlet Witch veteran Steve Orlando and drawn by Bernard Chang. That series will be accompanied by a relaunched Doctor Srange comic and the brand-new series Wiccan: Witches' Road.
What's Next After One World Under Doom?
Marvel's annual crossover events have a habit of leaving loose ends that set the stage for the next year's big storyline. 2006's Civil War led to 2007's World War Hulk, which led to 2008's Secret Invasion, which led to 2009's Dark Reign. Similarly, One World Under Doom establishes a foundation on which Marvel is clearly intending to build heading into 2026.
It looks as though Captain America writer Chip Zdarsky will be the most heavily involved in building something new in the aftermath of One World Under Doom. The first seeds of that will be seen in the epilogue one-shot The Will of Doom, by Zdarsky and artist CAFU.
From there, Marvel has already announced that Zdarsky is penning Armageddon, a crossover that looks to be similar in tone and scope to 2004's Avengers Disassembled. That event kicks off in June 2026, but it'll be preceded by a prelude miniseries called Wolverine: Weapons of Armageddon in February.
While we don't know much about the plot of Armageddon yet, it looks to be building on the fallout of the recent Ultimate Spider-Man: Incursion storyline, which saw Miles Morales return to his universe with several superpower-bestowing Origin Boxes in tow. We also know that Zdarsky and Valerio Schiti's Captain America series is about to reintroduce S.H.I.E.L.D. to the Marvel Universe, likely as a response to the political turmoil created by Doom's disappearance.
Apart from Doom's death, the most important development in this series is the idea that the world's population is experiencing a greater mistrust of superheroes. Again, many ordinary people blame the Avengers and others for ruining a good thing, seeing them as jealous hypocrites who couldn't save the world in the way Doom singlehandedly did. That climate of mistrust may play directly into whatever tragedy is awaiting Earth's Mightiest Heroes in Armageddon. If they lack the support of the very people they're fighting to protect, the Avengers may be doomed to fail.
What do you think about the finale to One World Under Doom? Did this crossover live up to your expectations? Let us know your thoughts in the comments below.
In other Marvel news, superstar writer Brian Michael Bendis is making his return to the company as part of The Avengers #800.
Jesse is a mild-mannered staff writer for IGN. Allow him to lend a machete to your intellectual thicket by following @jschedeen on BlueSky.







