Reaper is a fictional character in the DC Comics universe, and an enemy of Batman. Created by writer Mike W. Barr, and designed by artist Alan Davis, the Reaper first appeared in Detective Comics #575 (June 1987), the first part of the four-part Batman: Year Two storyline. The character and some of the "Year Two" storyline formed the inspiration for the Batman animated movie Batman: Mask of the Phantasm, though the character was changed to the Phantasm because scythe-killings were too gruesome for the film.. After the changes in DC continuity Zero Hour established, Year Two, Joe Chill´s death and The Reaper have been wiped out. Chill was back in continuity after 2005´s Infinite Crisis.
After Caspian returns from Europe he renews his rampage as the Reaper, which brings him into conflict with Batman. After losing a fight with the Reaper, Batman is forced to join forces with Joe Chill, the man who killed his parents. Having been assigned by the Gotham mob to kill both the Reaper and Batman when he had finished, Chill hunts the Reaper alongside Batman. After revealing his identity to Chill and putting a gun to his head, Batman's revenge is taken from him by the Reaper, who shoots Chill in the head. The Reaper engages Batman in a fierce battle, losing; the Dark Knight leaves him hanging from the scaffolding of a building under construction, and unmasks him. Batman, who had intended to marry Caspian's daughter, Rachel, is shocked, and holds out his hand to help the Reaper. However, Caspian, who knows what charges he is up against, tells Batman that he will make a fine successor, and lets go of the ledge, plummeting to his death. After being exposed as the Reaper, Caspian is given a funeral funded by Bruce Wayne, who says that he deserves a peaceful death. Rachel, who was initially unaware of her father's crimes, becomes a nun after Caspian's life as the Reaper is exposed.
Chill, in collaboration with his sister Marcia, attempts to lure Batman into a confrontation, where they would finally dispose of the Dark Knight with a very different kind of weapon. Chill's schemes are hampered by the arrival of his own son, Joey, with whom Chill attempts to bond. It is revealed that Chill witnessed his father's death at the original Reaper's hands, though he could not make out Bruce Wayne's unmasked face. Overcome with grief, Chill seeks revenge on Batman by taking up the mantle of the Reaper. At the same time, Batman faces some personal issues with Rachel Caspian, who has returned to Gotham convinced The Reaper is her father reborn. Chill and his sister use this to their advantage, plaguing Rachel with a series of encounters which create doubt in her and Batman's minds that he is the returned Judson Caspian. (It is also revealed in this story that Joe Chill Sr.'s body was stolen before it could be taken into custody at the end of Year Two). The Reaper uses an explosive to destroy the cornerstone of the Wayne Foundation building, freeing his father's old gun, which was used to murder Batman's parents.
Batman is eventually captured by Chill, who unmasks the unconscious crime-fighter, but does not recognize him (Batman had applied extensive make up to hide his identity). Chill subjects Batman to a video reel and a hallucinogenic drug that reduces Batman to a quivering wreck suffering from survivor's guilt. Chill has Batman posed at the top of a tall pedestal overlooking a pool of acid, and hopes Batman will kill himself. Marcia, who sees her father as nothing more than a thug who abused her mother, attempts to double cross her brother in order to deliver Batman to mob boss Morgan Jones. Chill slashes Marcia, apparently killing her. Robin arrives on the scene and coaxes Batman out of his hallucinogenic haze, spurring him to break free of his bonds. Batman and the Reaper fight, and Batman emerges victorious. As Batman holds the unmasked Chill over the acid pool, urged by Robin to drop him in, Chill's son Joey reveals himself and his father's identity. Deciding to act on the indecisions that he faced when he had Joe Chill at his mercy years earlier, Bruce spares Chill's life. After the police arrive and Chill is taken away in an ambulance, Batman goes to a bridge and discards Joe Chill's firearm into the ocean.