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By the end of the first Guardians of the Galaxy film, it was clear that the titular team of superheroes had five members: Chris Pratt’s Star-Lord, Zoe Saldana’s Gamora, Dave Bautista’s Drax the Destroyer, the Bradley Cooper-voiced Rocket, and the Vin Diesel-orated Groot. But will that remain the lineup through to the end of James Gunn’s sequel, Guardians of the Galaxy Vol. 2? Maybe not.

A lot of the marketing materials for the film have seemingly expanded the core characters to include Michael Rooker’s blue-skinned Yondu and Pom Klementieff’s new character, Mantis. So, what’s the scoop? Well, the scoop is that the Guardians lineup is indeed not written in stone.

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“There will be new members by the end of the movie,” says Guardians of the Galaxy Vol. 2 executive producer Jonathan Schwartz. “And allies who maybe aren’t with them at the end of the movie necessarily, [and who] go off on their own adventures. But the makeup of the Guardians will evolve.”

Guardians of the Galaxy Vol. 2 hits theaters on May 5.

Guardians of the Galaxy Vol. 2
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