Batman was first named "Bat-Man" by Kane. Batman made its first appearance in 1939 in "Detective Comics No. 27". He was the second DC superhero to be created. The first was Superman. Batman's origin story is that as a young child, Bruce Wayne saw a robber named Joe Chill murder his mother and father after the family left a theatre. Bruce decided that he did not want that kind of violence to happen to anyone else and wanted to avenge his parents death. He then dedicated his life to protect his city, Gotham City. Wayne learned many different ways to fight as he grew up. As an adult, Wayne used a costume to scare criminals so that there would be less crime in Gotham City. He called himself Batman.