An American writer and editor who spent his entire career at Marvel Comics, which he joined in 1978. Gruenwald rose to executive editor and served as Marvel's primary continuity authority for years. As a writer he is known for a decade-long run on Captain America and the creation of the Official Handbook of the Marvel Universe. His 12-issue maxiseries Squadron Supreme is regarded as a defining work in the superhero genre.
Mark Gruenwald
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