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His parents are dead, but at 75, he's still alive and kicking.

Batman's actual debut was in the May, 1939, issue of Detective Comics. But DC Comics declared Wednesday, the first day of festivities at Comic-Con in San Diego, to be Batman Day, the start of a year-long celebration of the Caped Crusader in comics, television and animation.

Comic-book creators and retailers across North America got into the spirit Wednesday with merchandise, masks and a special edition of Batman's origin story in Detective Comics #27 – an issue that includes the first-ever cover credit for writer Bill Finger, who developed much of Batman's mythos and rogues' gallery, as well as co-creator Bob Kane.