The Avengers: Doomsday (2026) hype has been building for months. Marvel fans are gearing up for another massive crossover, one expected to bring back familiar faces and push the MCU into a darker, more intense direction.With stars like Pedro Pascal, Vanessa Kirby, Chris Hemsworth, and Robert Downey Jr. in the mix, the film already feels like a cinematic event waiting to explode onto screens.Credit: Marvel StudiosPart of that excitement has centered around the return of Red Guardian, played by David Harbour. His tough-guy demeanor and comedic timing first won viewers over in Black Widow (2021), and having him step back into the suit for Avengers: Doomsday only added more fire to fan anticipation. With filming already wrapped, many assumed Harbour was entering a major career victory lap as both his Marvel role and Stranger Things journey moved toward big finales.Instead, he’s in the headlines for a very different reason.Allegations Surface Against David HarbourA recent report claims that Harbour has been named in a complaint filed by his Stranger Things co-star Millie Bobby Brown. According to the report, Brown submitted pages of accusations related to workplace behavior. Importantly, the allegations are not sexual in nature. An internal investigation reportedly took place over several months, though the results have not been disclosed to the public.It’s important to emphasize that these are allegations. No wrongdoing has been confirmed, and neither Harbour nor Netflix has publicly commented on the situation. The investigation findings remain confidential, and nothing official has been shared about the outcome.The report also notes that Brown brought a representative with her while filming began on Season 5, marking a noticeable shift behind the scenes during one of television’s most highly anticipated productions.Credit: Marvel StudiosDifficult Timing for Two Major ProjectsThe controversy comes at a pivotal time. The final season of Stranger Things is set to roll out in multiple parts, beginning November 26, with additional episodes landing on Christmas Day and the finale premiering in theaters and on streaming December 31. With the show poised to become a cultural moment once again, any cast tension naturally intensifies public interest.Meanwhile, Avengers: Doomsday has already finished filming. Production wrapped in September, which means Harbour’s performance and the fate of his character, Red Guardian, are already locked in. Even if discussions occur behind the scenes, the film itself is unaffected. Promotional plans down the line could be a different story, but so far nothing has changed publicly.Marvel has not issued a statement, and there has been no indication from the studio that Harbour’s future in the MCU is currently in jeopardy.Credit: NetflixA Bond Fans Have Watched for YearsHarbour and Brown have worked side by side since Stranger Things debuted in 2016. Their characters’ father-daughter dynamic became one of the emotional pillars of the series, and both have spoken warmly about their bond in past interviews. Fans admired their on-screen and off-screen closeness, which makes this situation even more surprising to many.With the final season promising to spotlight their relationship once again, the story surrounding the complaint adds an unexpected layer of drama as audiences prepare to say goodbye to the series.What Comes Next?At this moment, both major projects continue on schedule. Stranger Things is about to take over the pop-culture conversation all over again, and Avengers: Doomsday sits on deck for its 2026 release. Harbour has not been removed from either project, nor have there been confirmed consequences tied to the allegations.This situation exists in a space Hollywood knows all too well: public attention, private investigation, and unanswered questions. Until more information becomes available, speculation remains just that. These are allegations, and without public documentation or official statements, the entertainment world is left watching and waiting.For fans of both franchises, it’s a strange crossroads — the end of one era, the rise of another, and an unexpected controversy right in the middle.The post ‘Avengers: Doomsday’ Star in Trouble After Controversial Accusations appeared first on Inside the Magic.