Christopher "Chris" Smith, also known as the Peacemaker, is a fictional antihero in the DC Extended Universe (DCEU) and DC Universe (DCU) media franchises, based on the Charlton / DC Comics character of the same name. Adapted for film by writer/director James Gunn, he is portrayed by John Cena. Smith operates as a vigilante who aims to achieve peace at any cost, which results in a 30-year prison sentence at Belle Reve Penitentiary. He is approached by the facility's warden and the director of A.R.G.U.S., Amanda Waller, to join a strike team called Task Force X along with other inmates on an infiltration mission to the remote island of Corto Maltese. After being incapacitated during the mission, he is nursed back to health by A.R.G.U.S. and assigned to accompany a group of their agents for "Project Butterfly".

The DC Extended Universe (DCEU) is an American media franchise and shared universe centered on a series of superhero films produced by DC Studios and distributed by Warner Bros. Pictures. It is based on characters that appear in American comic books published by DC Comics. The DCEU also includes comic books, short films, novels, and video games. Like the original DC Universe in comic books, the DCEU is established by crossing over common plot elements, settings, cast, and characters.