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A TikTok user named @TheyNeverSawItComing went viral after claiming to sneak onto the set of Avengers: Doomsday, the upcoming Marvel movie directed by the Russo Brothers. The user posted behind-the-scenes footage from the London set, which was quickly removed from TikTok but re-uploaded to Instagram and spread widely on X (formerly Twitter).
One of the most talked-about details from the leaked clip was a Madripoor set—a notorious fictional island in the Marvel universe known for its criminal underworld, first introduced in The Falcon and the Winter Soldier and linked to Sharon Carter’s Power Broker storyline. This sparked speculation about Sharon’s potential return or even Wolverine’s involvement, with fans eagerly commenting on social media.
Additionally, viewers spotted fallen Sentinels—giant mutant-hunting robots from X-Men: Days of Future Past—fueling rumors about a major Avengers vs. X-Men crossover. With Marvel integrating Fox’s X-Men universe, fans are buzzing over possible cameos from Patrick Stewart’s Professor X, Ian McKellen’s Magneto, and Hugh Jackman’s Wolverine.
However, many questioned the authenticity of the video, pointing out the TikToker’s boldness in walking openly with a backpack and phone, and speculated the footage might be a staged publicity stunt, especially since it wasn’t immediately taken down by Disney.
While nothing has been officially confirmed, the leaked footage has intensified excitement and speculation ahead of Avengers: Doomsday’s release on May 1, 2026. Until then, fans will keep dissecting every possible clue and leak online.