The character first appeared as one of several ongoing features, in the debut issue of "Detective Comics" – originally an anthology series – in March 1937. He debuted a year before Superman's first appearance, and two years before Batman would become the title's lead feature. The character's adventures continued as Batman was introduced in issue #27, continuing as a supporting feature until "Detective Comics" #152 (October 1949). According to "Jess Nevins' Encyclopedia of Golden Age Superheroes", "He fights ordinary criminals, Yellow Perils, stage magicians, the Human Fly, creatures from the year Two Billion, the Man-Beast, and on at least one occasion space aliens."