Endgame is a six-issue comic book story arc first published by DC Comics in 2014, featuring the fictional superhero Batman. Set after the events of “Batman Eternal”, the story involves the return of Batman’s arch-enemy, the Joker, following his disappearance in the 2012 story arc “Death of the Family”, and concludes with the apparent deaths of both Batman and the Joker.
Following a fear-chemical attack by the Scarecrow, Batman recovers in his new base of operations; a safehouse seized from the Court of Owls. Suddenly, Batman is attacked by the Justice League, who are determined to kill him. Batman instructs his butler Alfred to enact plan “Fenrir”, a powerful robotic-armor designed to battle the entire Justice League.
Soon Batman battles the merciless Superman, finally subduing him with Kryptonite-laced gum. The League is revealed to be infected with a more powerful strain of Joker toxin, customized to each individual.