I’m Convinced Millie Bobby Brown Is Going To Join The MCU & There Are 8 Marvel Characters I’d Happily See Her Cast As

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Given the Marvel Cinematic Universe’s tendency to scoop up young, talented stars on the rise, it feels inevitable that Millie Bobby Brown will eventually join the MCU timeline. Brown has been one of Hollywood’s most in-demand young actors since Stranger Things launched in 2016, and with that show coming to an end, her schedule is about to open up significantly. Marvel has been rumored to be interested in her for years, and now the perfect opportunity is emerging for her to appear in the MCU’s future.

Millie Bobby Brown’s MCU debut has been the subject of speculation for years. There were early rumors she could appear in The Eternals and, given Marvel’s pattern of casting actors with existing blockbuster appeal, she remains a top contender for a future role. Interestingly, Brown worked with Joe and Anthony Russo on 2025’s The Electric State, the team behind some of the MCU’s greatest films. The Russos, who are returning for Avengers: Doomsday and Avengers: Secret Wars, have even expressed interest in working with Millie Bobby Brown in the MCU, rekindling speculation about Brown’s MCU introduction.

8

Kitty Pryde Is A Popular Fan-Casting For Brown

First Appeared In Uncanny X-Men #129

One of the most popular fan-castings for Millie Bobby Brown in the MCU is Kitty Pryde, one of the X-Men’s most beloved younger members. Known for her phasing abilities and close relationship with Wolverine, Kitty is a character that many have been waiting to see properly introduced into the MCU’s new X-Men lineup. Brown has the charisma and acting chops to bring Kitty to life, balancing the character’s youthful energy with the emotional depth that makes her such a compelling hero.

Kitty Pryde is often depicted as a relatable, intelligent, and determined young mutant who plays a crucial role in many major X-Men storylines. Her ability to phase through solid objects makes her a unique fighter, but her real strength comes from her strong moral compass and leadership skills. Brown has already proven she can play strong-willed yet vulnerable characters, making her a perfect fit for Kitty. Given that Marvel is likely to rebuild the X-Men from the ground up, casting Brown as Kitty could give the franchise a fresh, fan-favorite mutant to focus on.

7

Millie Bobby Brown Would Make A Great Squirrel Girl

First Appeared In Marvel Super-Heroes (Vol. 2) #8

If Marvel wanted to take Brown in a more lighthearted direction, she would be an excellent choice for Squirrel Girl. Doreen Green, aka Squirrel Girl, is one of Marvel’s most underrated yet beloved comedic heroes, known for her upbeat personality, ability to talk to squirrels, and surprising combat skills. While Brown is best known for dramatic roles, she has shown great comedic timing in films like Enola Holmes, making her an interesting choice for this quirky character.

Squirrel Girl has been teased for years as a potential MCU addition, but she has yet to make her big-screen debut. Anna Kendrick and Shannon Purser have previously been fan-cast for the role, but Brown could bring a fresh take. She has the charm and energy to make Squirrel Girl’s quirky humor work, while also bringing depth to a character often dismissed as a joke. With the MCU’s foray into comedic characters, Brown’s Squirrel Girl could be a perfect addition, either in a Young Avengers-style lineup or her own fun solo project.

6

Brown Is A Compelling Choice For The X-Men’s Rogue

First Appeared In Avengers Annual #10

Another strong potential role for Millie Bobby Brown in the MCU is Rogue. While the character was portrayed by Anna Paquin in Fox’s X-Men films, that version of Rogue was very different from her comic counterpart, who is typically depicted as a strong, confident Southern brawler with the ability to absorb powers through touch. If the MCU wants to bring a more comic-accurate Rogue to life, Brown could be an interesting and unexpected choice. Though she isn’t the first actress fans think of for Rogue, Brown has the acting range to take on the challenge.

She’s proven she can embody both strength and vulnerability, which are key to Rogue’s character. Brown would bring a fresh take to the role and seeing her go up against (or alongside) Captain Marvel in a future storyline could be a great way to integrate her into the MCU’s evolving universe. Brown has already demonstrated her ability to play layered characters, as seen in Stranger Things and Enola Holmes. She could capture Rogue’s tragic backstory while also delivering the character’s signature confidence and attitude.

5

Pixie Is An Ideal X-Men Character For Millie Bobby Brown

First Appeared In X-Men: Academy X #5

If Brown were to join the MCU’s X-Men, another fitting choice would be Pixie. Megan Gwynn, also known as Pixie, is a lesser-known but beloved mutant with fairy-like wings, teleportation abilities, and a connection to magic. This role would allow Brown to embrace both the whimsical and dramatic aspects of superhero storytelling. Pixie is known for her bright, bubbly personality, which would be a departure from the more intense roles Brown has played, showcasing her versatility as an actress.

Additionally, since the MCU is expanding its supernatural and magical elements with the Doctor Strange movies and the perennially delayed Blade, Pixie could be introduced as a bridge between the mutant world and the mystical realms. Pixie is celebrated as one of Marvel’s strongest female characters, who has appeared in numerous comic lines since her introduction in 2004. Brown could readily step into such a role post-Stranger Things and make a standout character, providing audiences with a fresh and vibrant take on a younger X-Men hero who could interact with both the traditional mutants and Marvel’s magical side.

4

Black Cat Needs To Make A Proper Cinematic Debut

First Appeared In The Amazing Spider-Man #194

Felicia Hardy, aka Black Cat, is long overdue for a proper live-action introduction, and Millie Bobby Brown could be an unexpected yet inspired choice. While Black Cat is typically depicted as a slightly older character with a flirtatious, morally ambiguous nature, the MCU could take a different approach by introducing a younger Felicia Hardy. Brown has already shown she can play characters with sharp intelligence and a rebellious streak, making her a strong candidate for Black Cat’s persona as a master thief.

Brown’s ability to balance strength and vulnerability would add new dimensions to Felicia, making her more than just Spider-Man’s occasional love interest. With Sony and Marvel Studios expanding the Spider-Verse, introducing Black Cat alongside Tom Holland’s Peter Parker could make for an exciting dynamic. A younger Felicia could evolve into the classic femme fatale over time, giving Brown the chance to grow within the role while bringing fresh energy to one of Spider-Man’s most fascinating allies. While a version of Felicia Hardy was teased in The Amazing Spider-Man 2, she still hasn’t had a live-action debut.

3

Millie Bobby Brown Could Play A Live-Action Spider-Gwen

First Appeared In Edge of Spider-Verse #2

Spider-Gwen is a multiversal variant of Spider-Man’s ex-partner Gwen Stacy. She has become one of Marvel’s most beloved Spider-people, and Millie Bobby Brown could be a great fit for the role. Brown’s experience with action-heavy, emotionally driven stories makes her an ideal choice to bring Gwen’s tragic yet empowering journey to life. Unlike the traditional Gwen Stacy, Spider-Gwen is a confident, skilled superhero with a punk-rock edge, something Brown could embody with ease.

Sony’s Spider-Verse movies proved how dynamic and captivating a cinematic Spider-Gwen could be, particularly in Spider-Man: Across the Spider-Verse, where she took on a much larger role. As the MCU’s multiverse has opened the door for various Spider-Man variants after Spider-Man: No Way Home, and given Spider-Gwen’s popularity, it’s only a matter of time before she makes her live-action debut. Brown would bring the right mix of toughness and vulnerability to the role, ensuring that Gwen’s personal struggles – especially the loss of her Peter Parker – would hit just as hard as the action sequences.

2

Millie Bobby Brown Would Be Amazing As The MCU’s Magik

First Appeared In Giant-Size X-Men #1

With the MCU expanding into supernatural storytelling and introducing the X-Men, Magik could be a game-changer, and Millie Bobby Brown would be a fantastic choice for the role. Magik, also known as Illyana Rasputin, is a powerful sorceress and mutant with a tragic past, having spent years trapped in the demonic realm of Limbo. In Limbo, Illyana gained supernatural powers, a mystical sword, and the name Magik. Brown’s ability to portray resilience and emotional depth would make her an excellent Illyana, who struggles with darkness while striving to protect those she cares about.

Stranger Things has perfectly primed Millie Bobby Brown to battle hellish monsters armed with a mighty sword. The thematic parallels with her character, Eleven, are undeniable and make Brown especially well suited to the role. The character’s connection to magic could tie her into Doctor Strange or Blade, making her a pivotal figure in Marvel’s supernatural lineup. Watching her wield the Soulsword and battle demons while balancing her inner turmoil would be a thrilling addition to the MCU’s mutant roster.

1

Songbird Still Needs To Appear In The MCU

First Appeared In Marvel Two-in-One #54

Songbird, also known as Melissa Gold, is one of the most compelling characters from Marvel’s Thunderbolts comics, whom Millie Bobby Brown would be an ideal choice to play in the MCU. Originally a villain before turning into a hero, Songbird has a complex redemption arc that could fit perfectly within the MCU’s growing roster of morally gray characters. Her ability to create powerful sound constructs would make for stunning visuals, and her personal struggles – including overcoming a troubled past – align with the type of characters Brown excels at portraying.

With the MCU’s Thunderbolts* movie, the MCU has a perfect opportunity to introduce Songbird as a new addition to the team in the future and potential sequel. Brown’s ability to deliver both fierce determination and vulnerability would make her an excellent fit, allowing her to evolve from a street-level villain to a full-fledged superhero. Given her experience with emotional storytelling, Millie Bobby Brown could elevate Songbird’s journey, making her one of the MCU’s most intriguing and multidimensional new characters.

Upcoming MCU Movies

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