Star-Lord (Peter Quill) • Marvel Cinematic Universe Wiki
According to the MCU wiki, Peter Quill is about 40. However, it appears that the selection of music and audio tech suggests he's about a decade older, closer to Tony Stark's age.
Peter Quill - Wikidata
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Peter Quill | Marvel's Guardians of the Galaxy Wiki | Fandom
Peter Quill (Earth-616) | Marvel Database | FANDOM powered by Wikia | Gamora comic, Marvel comics art, Marvel knights
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Marvel's Guardians of the Galaxy Game Guide Wiki
Guardians of the Galaxy Comic Confirms Star-Lord Bisexual, Polyamorous