The Black Hammer Gang is a villainous group of thieves, and the main antagonist of Guardian Fairy Michel. The group consists of Salome, the leader, Boogy, her second-in-command, Woogy, a strong, simpleminded brute, Meggi, an evil genius, and Biam, a turncoat fairy of nature.

Their goal is to steal all of the world's treasures, using fairy monsters, giant robots, and the floating castle to achieve their dastardly goals. They are opposed by Kim and Michel (character).