Related Information for Monster High Monster High is a line of fashion dolls created by Mattel. They were officially released in July 2010.Unlike most fashion dolls, the characters are inspired by monster movies and horror fiction. They are either depicted as being related to or are offspring of famous monsters such as Dracula, Frankenstein, The Mummy, Medusa, the Creature from the Black Lagoon, zombies and the Wolfman.The Monster High franchise does not limit itself to dolls, but also includes other consumer products.. read more