Ben Affleck wasn’t just teasing: Deathstroke will, in fact, be the main antagonist of the Batman standalone movie he’s directing, TheWrap has exclusively learned from an individual with knowledge of the situation.

Earlier this morning, the actor who plays the Dark Knight posted a cryptic tweet of the new villain walking toward the camera in very cinematic fashion, which sent fanboys into a frenzy of speculation.

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Deathstroke was created by Marv Wolfman and George Perez. He is a mercenary and assassin who first appeared in “The New Teen Titans” #2 back in 1980. Wizard magazine rated him the 24th greatest villain of all time.

Also, in 2009, Deathstroke was ranked as IGN’s 32nd greatest comic book villain of all time. Deathstroke, or commonly referred to as Deathstroke the Terminator or simply Slade, is known to be the greatest assassin in all of DC Comics. He has encountered Batman on several occasions in the comics.

Their first encounter was in the 1991 Deathstroke standalone DC comic in the story arc “City of Assassins” where Deathstroke pounded Batman to a bloody pulp.

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Suspicions arose that we would be seeing Deathstroke in the DC Cinematic universe when “Arrow” creator Marc Guggenheim was asked earlier this year why Deathsroke wasn’t returning to the television series. “The character of Slade Wilson is currently tied up in another DC project. Walter is more likely,” he said in a Tumblr post.

Now it appears we finally have our answer, as Deathstroke will square off against Batman on the big screen in the movie titled “The Batman.”

Warner Bros. had no comment when contacted by TheWrap.