Fantasy Masterpieces #12 was published by Marvel Comics on November 1, 1980, as part of a series that began in 1979. Jim Starlin and Stan Lee write, and art comes from Alan Weiss, Dan Adkins and John Buscema. This 52-page issue features Hulk, Silver Surfer, Thanos, Gamora and Adam Warlock, among 10 characters cataloged on VerseDB.