In 1993, senior editor Karen Berger convinced DC to make her own imprint for mature readers named Vertigo, similar to DC imprints Piranha Press and Paradox Press as well as Marvel's Epic Comics. Using popular titles such as "Animal Man", "Swamp Thing", "Hellblazer", "The Sandman" and "Shade, The Changing Man" as its blueprint along side new creator owned material, DC/Vertigo became a hub for intelligent and acclaimed comic books. While rival Marvel Comics continued to dominate the publishing arena with their exceedingly popular properties, DC/Vertigo became the destination for literary and inventive titles during the period.