Spoilers for Guardians of the Galaxy Vol. 2 and its post-credits scene follow.
The post-credits scene for Guardians of the Galaxy Vol. 2 introduced a new character to the Marvel Cinematic Universe without actually revealing him. The Sovereign's leader Ayesha had created Adam Warlock in a golden cocoon, priming the character to truly debut in Guardians of the Galaxy Vol. 3.
The iconic Adam Warlock cocoon which Marvel Comics fans have been familiar with for years was thought to had premiered in 2014's Guardians of the Galaxy, when the Collector had a cocoon locked away in his warehouse. As it would turn out, this cocoon would serve as an Easter egg and nothing more when the film's sequel truly and explicitly teased the creation of the character.
Director James Gunn recently addressed the multiple cocoon issue when a fan probed him about it on Twitter.
The cocoon in the 1st GotG (& at Disneyland) is likely a primitive version of the Sovereign cocoons, when they 1st hatched their own. https://t.co/Xs0s0BB1ha— James Gunn (@JamesGunn) June 28, 2017
"The cocoon in the first Guardians of the Galaxy (& at Disneyland) is likely a primitive version of the Soverign cocoons, when the first hatched their own," Gunn wrote, indicating this cocoon was never actually intended to create Warlock but, instead, the Sovereign race which prides themselves on being golden perfection.
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Guardians of the Galaxy Vol. 2 is written and directed by James Gunn (Slither). The film marks the return of the original Guardians, including Chris Pratt (Jurassic World) as Peter Quill/Star-Lord; Zoe Saldana (Star Trek Into Darkness) as Gamora; Dave Bautista (Spectre) as Drax; Vin Diesel (Furious 7) as the voice of Groot; Bradley Cooper (American Sniper) as the voice of Rocket; Michael Rooker (Jumper) as Yondu; Karen Gillan (The Big Short) as Nebula; and Sean Gunn (Gilmore Girls) as Kraglin. New cast members include Pom Klementieff (Oldboy), Elizabeth Debicki (The Great Gatsby, Everest), Chris Sullivan (The Knick, The Drop) and Kurt Russell (The Hateful Eight, The Thing).
Guardians of the Galaxy Vol. 2 is in theaters now. Spider-Man: Homecoming lands on July 7, 2017, followed by Thor: Ragnarok on November 3, 2017. After that Black Panther debuts on February 16, 2018, while Avengers: Infinity War hits theaters on May 4, 2018. Ant-Man and the Wasp