when did batman first appeared in comic books
Batman (comic book) Batman is an ongoing American comic book series featuring the DC Comics hero of the same name. The character first appeared in Detective Comics #27 (cover dated May 1939). Batman proved to be so popular that a self-titled ongoing comic book series began publication with a cover date of Spring 1940.[2][3] It was first advertised in early April 1940, one month after the first appearance of his new sidekick, Robin, the Boy Wonder.