Thunderbolts* Introduces A Secret Eighth Team Member

Warning! This article contains SPOILERS for Thunderbolts*.

Thunderbolts* is the team-up movie that the Multiverse Saga was in need of, and the Marvel Cinematic Universe has planted the seeds for its new superhero squad to grow when it is seen next. While the cast of Thunderbolts* includes one MCU veteran in the form of Sebastian Stan’s Bucky Barnes, it is mostly made up of characters who have debuted during the Multiverse Saga. The team has three super-soldiers, a tactical fighter in Yelena, and Ghost, who can phase through objects and people.

Taskmaster filled a similar role to Yelena’s, which is likely why she was chosen as the shocking death at the start of the film to get Thunderbolts*‘s story rolling. While the cast of the 2025 MCU movie included a few beloved Marvel characters and presented some interesting powers, there were complaints about how multiple characters had similar skills and how the Thunderbolts did not really feature players connected to the team in the comics. Well, it seems like the perfect hero to solve those issues was hiding in plain sight, perhaps waiting for a Thunderbolts* sequel to be explored.

Geraldine Viswanathan’s Mel Plays A Key Role In Thunderbolts*

Bucky Barnes Needed Her Help To Form His Superhero Team

Geraldine Viswanathan makes her MCU debut in Thunderbolts* as Mel, who is the ᴀssistant to Julia Louis-Dreyfus’ Valentina Allegra de Fontaine. The role was originally going to be played by The Bear‘s Ayo Edebiri, who had to leave due to scheduling conflicts. Based on that prior casting, I knew there was likely more to this mysterious character than meets the eye. In Thunderbolts*, Mel plays a key role in helping the new superhero team even though she is not part of it.

While Mel does help Valentina with her dark plans, her moral code is different from her boss’, which leads to Sebastian Stan’s Bucky Barnes being able to convince her to help him bring Valentina down. It is due to Mel that Bucky is able to track the Thunderbolts and later get them to join him in going after Valentina in the former Avengers Tower, which would become the HQ of the Thunderbolts — now called the New Avengers — by Thunderbolts*‘s post-credits scene. However, there might be more to Mel than the movie lets on.

Mel Is Theorized To Be Melissa Gold AKA Songbird From The Comics

Thunderbolts* Might Have Hidden An Original Team Member From The Comics

In the comics, the original formation of the Thunderbolts included characters like Zemo and Songbird. None of the original members of the team in the comics appeared in the MCU movie, or at least it seemed like that. After Thunderbolts*, I’m convinced that it makes sense for Geraldine Viswanathan’s Mel to be revealed as Melissa Gold, aka Songbird. The first clear connection between the characters is their names, as Mel is likely short for Melissa. The other is the bird necklace that Mel wears in Thunderbolts.

Marvel is known for planting the seeds of future characters and storylines in every MCU project, so by calling Viswanathan’s character Mel and giving her a bird necklace, I feel like Marvel is telling the audience that Songbird was indeed in Thunderbolts* and we should see her superhero persona come out in the future. In the comics, Songbird has sonic powers, being able to use sonic screams to incapacitate enemies, create solid constructs out of sound, and more. Mel does not seem to have powers in Thunderbolts*, but a similar experiment to the Sentry project could turn her into Songbird

Songbird Could Join The Team In Avengers: Doomsday

The New Avengers Will Return In The 2026 Movie


Avengers Doomsday official logo

I don’t think that Mel will have to wait until a Thunderbolts* sequel for us to see her turn into Songbird if the MCU really is going in that direction with the character, which the evidence points to. Mel could very well become a superhero next year, as pretty much all Thunderbolts* members are confirmed to return in Avengers: Doomsday. While Viswanathan was not among the cast members announced for the Marvel movie, Marvel Studios President Kevin Feige has revealed that it was not the full list of stars who will appear in the Avengers film.

Thunderbolts* Cast Member

Character

Sebastian Stan

James “Bucky” Barnes, A.K.A. The Winter Soldier

Florence Pugh

Yelena Belova, A.K.A. Black Widow

Wyatt Russell

John Walker, A.K.A. US Agent

David Harbour

Alexei Shostakov, A.K.A. Red Guardian

Hannah John-Kamen

Ava Starr, A.K.A. Ghost

Olga Kurylenko

Antonia Dreykov, A.K.A. Taskmaster

Julia Louis-Dreyfus

Contessa Valentina Allegra De Fontaine

Lewis Pullman

Bob (Sentry/The Void)

Geraldine Viswanathan

Mel

As such, there is a chance that Mel could be one of the remaining characters to be announced for Avengers: Doomsday. I think it would make sense for her to appear, as she was key to Thunderbolts*‘s story, and Bucky could once again come to her for help, or perhaps Mel is now directly providing tech support to the New Avengers, since Yelena Belova told Valentina that they now owned her, which means Mel and OXE could be working for the heroes now. If the team needs help after Thunderbolts*, going to Mel, a familiar face, makes sense.

All Announced Upcoming MCU Movies



  • Thunderbolts (2025) Official Poster

    Thunderbolts*

    Release Date

    May 2, 2025







  • 01593277_poster_w780.jpg

    The Fantastic Four: First Steps

    Release Date

    July 25, 2025







  • Avengeres Doomsday logo placeholder poster

    Avengers: Doomsday

    Release Date

    May 1, 2026







  • Spider-Man Brand New Day Logo Poster

    Spider-Man: Brand New Day

    Release Date

    July 31, 2026







  • Avengers: Secret Wars

    Release Date

    May 7, 2027





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