The Batman also received a spin-off comic book series – "The Batman Strikes!" – published by DC Comics. The spin-off comic books were set in the same continuity and style as "The Batman". The man known as Batman, the costumed protector of Gotham City, is secretly billionaire playboy, Bruce Wayne (voiced by Rino Romano). Batman began three years prior to the start of the series, and the Gotham City police do not publicly acknowledge the vigilante's existence. Operating out of a secret lair underneath Bruce Wayne's mansion — known as the Bat cave — Batman and his butler, Alfred Pennyworth (voiced by
Batman: Legends of the Dark Knight popularity of these led to the limited series "". The short-lived series "Legends of the DC Universe" was based on the concept of "Batman: Legends of the Dark Knight". But instead of Batman, it featured a rotating roster of other DC superheroes. The "Batman: Mitefall" special used the modern version of Bat-Mite, who first appeared in "Legends of the Dark Knight" #38, to parody the Batman storyline. "Batman: Four of a Kind" chronicles Batman's four first meetings with the Batman villains Poison Ivy, the Riddler, the Scarecrow and the Man-Bat. Those stories were printed in the "Annual"s of the four