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Marvel Studios has a knack for accidentally spoiling their own movies. Either by sending Tom Holland for interviews or by releasing merchandise of an upcoming film, Marvel Studios has oftentimes spilled their own secrets.

Well, the latter seems to be the case once again as the merchandise forCaptain America: Brave New Worldhas allegedly leaked. Confirmed what people feared was true, Rosa Salazar’s villainous appearance as Diamondback has most probably been confirmed!
Marvel Accidentally Spoils Its Own Movie (Again)!
Captain American: Brave New World,starringAnthony Mackieand Sebastian Stan is probably one of the most awaited MCU films of all time. With the new MCU taking the fight for equal rights amidst a turbulent ever-changing world,Brave New Worldis sure to tackle the transfer of power from Steve Rogers to Sam Wilson.
Rosa Salazar, the American actress known for movies likeAlita: Battle Angel, Bird Box,and,The Maze Runnerfranchise was spotted on the sets ofCaptain American: Brave New Worldand people became curious. With several speculations and rumors on her way, it was heavily rumored that Rosa Salasar is portraying the villainous character of Diamondback aka Rachel Leighton in the upcoming MCU movie.

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Marvel Studios was indeed keeping the rumors under check as they seemingly did not confirm or deny anything. Well, that is until McDonald’s and Marvel decided to collaborate together and create some merchandise for the upcoming film. Prepare to brush up on your Portuguese skills.
Rosa Salazar’s Diamondback Has Been Alleged To Be The Villain!
For those unversed in the comics, Diamondback aka Rachel Leighton is a supervillain appearing in the Marvel Comics. Being a direct enemy of Captain America, the appearance of Salazar while shootingCaptain America: Brave New Worldmade sense.
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The rumor was further confirmed when a pamphlet from McDonald’s showcased the character of Diamondback alongside Sam Wilson’s Falcon!
🚨 IH! A coleção do McDonalds para “CAPITÃO AMÉRICA: ADMIRÁVEL MUNDO NOVO” estará disponível em breve.

O filme, que inicialmente tinha a data de estreia para as próximas semanas, foi adiado para o próximo ano. (E pelo visto, não tinham como mudar mais o calendário de coleções).pic.twitter.com/v7hJY8akwp
— Marvel News (@BRMarvelNews)July 08, 2025

The tweet roughly translates to:
“The McDonalds collection for “CAPTAIN AMERICA: A BRAVE NEW WORLD” will be available soon. The film, which initially had a release date for the next few weeks, has been postponed until next year. (And apparently, there was no way to change the collection calendar anymore).”
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Well, the rumors do seem credible enough. Upon closer inspection, the character of Cascavel can be seen numbered 5 alongside Red Hulk. So, it could be potentially true that Rosa Salazar has indeed joined the movie to portray the role of Diamondback, or…this theory could turn out to be a complete hogwash.
Nothing can be confirmed or denied at the moment but if the rumor indeed turns out to be true, Marvel Studios will have accidentally spoiled their own movie (again)!Captain America: Brave New Worldis set for a release date of 14th February 2025 in theaters across the U.S.

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Visarg Acharya
Senior Writer
Articles Published :3264
Visarg Acharya is a Senior Writer at FandomWire, majorly focusing on movies, with over 3000 articles published. He has been an entertainment journalist for the past three years and a copywriter at a corporation. Visarg usually covers news and theories on the MCU and the DCU, with an emphasis on Avengers and Superman; Game of Thrones, and more.A Tarantino fan, Visarg, spends his time critiquing various directors’ filmographies and watching them with curiosity. Medieval fantasy like The Lord of the Rings or sci-fi movies like Interstellar, watching the latest horror movies, and listening to Hans Zimmer become his comfort zone. When idle, he can be found reading fantasy novels with a terrible cup of coffee in hand.