Although he worked with Bill Finger on the original comics, Bob Kane is generally credited with creating the character of Batman. He was a twenty-two year old comic book artist when he was charged with the task of creating another superhero in the mold of the DC phenomenon, Superman. According to Kane, the original concept for Batman came from three sources: a Leonardo da Vinci sketch of a man trying to fly with bat-like wings, a 1930s movie titled "The Bat whisperer", and the masked heroes Zorro and The Shadow. Batman made his first appearance in "Detective Comics #27" (May, 1939).