Question: In what comic series did the League of Assassins first appear??
Answer:
In what comic series did the League of Assassins first appear?
The League of Assassins (renamed the League of Shadows or Society of Shadows in adapted works) is a group of fictional villains appearing in American comic books published by DC Comics. The group is depicted as a collective of assassins who work for Ra's al Ghul, an enemy of the superhero Batman.
Batman