This thesis demonstrates that Doctor Strange comics incorporate established tropes of the fantastic canon while also incorporating postmodern techniques that modernize the genre. Strange's debut series, Strange Tales, begins this development of stylistic changes, but it still relies heavily on standard uses of the fantastic. The 2015 series, Doctor Strange, builds on the evolution of the fantastic apparent in its predecessor while evidencing an even stronger presence of the postmodern. Such use of postmodern strategies disrupts the suspension of disbelief on which popular fantasy often relies. To show this disruption and its effects, this thesis examines Strange Tales and Doctor Strange (2015) as they relate to the fantastic cornerstones of Tolkien's The Hobbit and The Lord of the Rings and Rowling's Harry Potter series. It begins by defining the genre of fantasy and the tenets of postmodernism, then it combines these definitions to explain the new genre of postmodern fantasy, or post-fantasy, which Doctor Strange comics develop. To show how these comics evolve the fantasy genre through applications of postmodernism, this thesis examines their use of otherworldliness and supernaturalism, as well as their characterization and narrative strategies, examining how these facets subvert our expectations of fantasy texts.