The character of Batman was created by writer Bill Finger and artist Bob Kane. He was introduced in the anthology comic book series "Detective Comics" #27 in May 1939 published by National Allied Publications (later renamed DC Comics), though at the time was referred to as "The Bat-Man". The character was quickly deemed a success, and followed Superman's lead with the debut of a second on-going self-named title. "Batman" #1 premiered in spring 1940. The two titles quickly added new characters to the Batman mythos, including the "Detective Comics" #38 debut of a sidekick for Batman, Robin. Super-villains and other nemeses for the duo were created as well, with Talia al Ghul introduced in "Detective Comics" #411, and her father, Ra's al Ghul in "Batman" #232.