Bruce Wayne is the only son of physician Dr. Thomas Wayne and his wife Martha. As a small child, Bruce was exposed to one of his father's costumes, which resembled a bat and was used by Dr. Wayne for a masquerade party.
Dr. Wayne, Martha, and young Bruce were walking home from a night out at the movies. A mugger named Joe Chill leaped from the shadows of Park Row and assaulted them, demanding the pearl necklace Martha was wearing. Dr. Wayne tried to fight back, but Chill shot him directly in the chest, killing him. He then turned his gun on Martha and viciously ended her life as well.
-dc.fandom
Key Issues & Appearances
1
Significant comic book appearances featuring Batman