Thomas Wayne in the context of "Flashpoint (comics)"

Batman is a superhero who appears in American comic books published by DC Comics. Batman was created by artist Bob Kane and writer Bill Finger, and debuted in the 27th issue of the comic book Detective Comics on March 30, 1939. In the DC Universe, Batman is the alias of Bruce Wayne, a wealthy American playboy, philanthropist, and industrialist who resides in the fictional Gotham City. His origin story features him swearing vengeance against criminals after witnessing the murder of his parents, Thomas and Martha, as a child, a vendetta tempered by the ideal of justice. He trains himself physically and intellectually, crafts a bat-inspired persona, and monitors the Gotham streets at night. Kane, Finger, and other creators accompanied Batman with supporting characters, including his sidekicks Robin and Batgirl; allies Alfred Pennyworth and James Gordon; love interest and occasional adversary Catwoman; as well as foes such as the Penguin, the Riddler, Two-Face, and his archenemy, the Joker.

Kane conceived Batman in early 1939 to capitalize on the popularity of Superman; although Kane frequently claimed sole creation credit, Finger substantially developed the concept from a generic superhero into something more bat-like. They drew inspiration from pulp fiction characters like the Shadow, Sherlock Holmes, and the Green Hornet. Batman received a spin-off publication, Batman, in 1940. Kane and Finger introduced Batman as a ruthless vigilante who frequently killed or maimed criminals, but he evolved into a just, tempered superhero with a stringent moral code that prohibits killing during the 1940s. Unlike most superheroes, Batman does not possess any superpowers, instead relying on his intellect, fighting skills, and wealth. The 1960s Batman television series used a camp aesthetic, which continued to be associated with Batman for years after it ended. Various creators worked to return Batman to his darker roots in the 1970s and 1980s, culminating with the 1986 miniseries The Dark Knight Returns by Frank Miller.

The origin of Batman depicts the events that cause a young Bruce Wayne to become Batman. The core event (the murder of Bruce's parents Thomas and Martha Wayne at the hands of Joe Chill) has remained fairly unchanged, but the aftermath and Bruce's journey to become Batman were not detailed until later years. The story first appeared in Detective Comics #33 (November 1939), and was retold in graphic novels such as Batman: Year One.

Martha Wayne (née Kane) is a fictional character appearing in American comic books published by DC Comics. She is the mother of Bruce Wayne (Batman), and wife of Dr. Thomas Wayne as well as the paternal grandmother of Damian Wayne, the fifth Robin. After she and her husband are murdered in a street robbery, her son—orphaned—is inspired to fight crime by adopting the vigilante identity of the Batman.

As a key figure in Batman's origin story, Martha Wayne has appeared in multiple forms of media. Notable portrayals of the character in live-action include Sara Stewart in Batman Begins, Lauren Cohan in Batman v Superman: Dawn of Justice, Carrie Louise Putrello in Joker, and Stella Stocker in The Batman. Emma Paetz also portrays her in the television series Pennyworth in a main role.

Alfred Thaddeus Crane Pennyworth, originally Alfred Beagle and commonly known simply as Alfred, is a fictional character appearing in American comic books published by DC Comics, most commonly in association with the superhero Batman.

Alfred is depicted as Batman's meticulous, disciplined, loyal and tireless confidante, butler, legal guardian, best friend, aide-de-camp, and surrogate father figure following the murders of his parents, Thomas and Martha Wayne. As a British noble who is a classically trained butler, whose skills extend far beyond mere housekeeping, Alfred is uniquely suited to support the lives of masked crime fighters. A former British intelligence officer, field medic and retired Shakespearean actor operative of honor and ethics with connections within the intelligence community, he has been called "Batman's batman". He serves as Bruce's moral anchor while providing comic relief with his sardonic and cynical attitude; as an amnesiac, he has also served as the supervillainous Outsider. A vital part of the Batman mythos, Alfred was nominated for the Wizard Fan Award for Favorite Supporting Male Character in 1994. Bane killed Alfred in 2019 during the City of Bane storyline, and he remains dead in the primary continuity of the DC Universe as of 2025.

Joe Chill is a fictional character appearing in American comic books published by DC Comics, commonly in association with the superhero Batman. Created by Bill Finger and Bob Kane, the character first appeared in Detective Comics #33 (November 1939). In most adaptations of Batman's origin story, Joe Chill is the mugger who murders young Bruce Wayne's parents, Dr. Thomas Wayne and Martha Wayne. The murder traumatizes Bruce, inspiring his vow to avenge their deaths by fighting crime in Gotham City as the vigilante Batman.

As an integral part of Batman's origin story, Joe Chill has appeared in numerous media adaptations. Richard Brake portrayed the character in Batman Begins, and Doug Bradley played him in Gotham Knights.