John Cena stars in this HBO Max series, a spin-off from "The Suicide Squad," as a jingoistic killer who believes in achieving peace at any cost, no matter how many people he has to kill to get it. What is the name of this anti-hero show?

The HBO Max series featuring John Cena as a jingoistic killer who strives for peace through violent means is indeed "Peacemaker (Review)." This action-comedy series, which premiered on January 13, 2022, serves as a direct spin-off from James Gunn's 2021 film "The Suicide Squad," further exploring the character of Christopher Smith. Cena reprises his role as the titular anti-hero, whose misguided patriotism and extreme methods lead to darkly comedic and surprisingly introspective situations.

The character of Peacemaker originated in Charlton Comics in 1966, initially conceived as a pacifist diplomat who paradoxically used force to achieve peace. After DC Comics acquired the character, his backstory was significantly revamped, portraying him as a violent vigilante haunted by the trauma of his past and the ghost of his Nazi father. James Gunn, who wrote and directed "The Suicide Squad," also created, wrote, and served as showrunner for the "Peacemaker" series, bringing his distinctive blend of irreverent humor, heartfelt character development, and impactful action to the small screen.

The show delves into Peacemaker's complex psychology, exploring his deeply flawed moral compass and his struggle with his personal demons and toxic upbringing, all while he's forced to join a new black ops mission called "Project Butterfly." The series is noted for its unique tone, combining over-the-top superhero action with a strong comedic sensibility, often featuring a memorable soundtrack and exploring themes of family, identity, and the true meaning of heroism through its ensemble cast.