He’s the hero “Joker” fans needed.

A mystery man known only as “V for Vegas” confronted an unruly patron during a screening of the new Joaquin Phoenix flick Friday night in Times Square, diffusing the tense situation until theater security arrived to boot the troublemaker, witnesses said.

“This is the guy who spent our entire screening of JOKER in NYC spitting at people and clapping whenever Joker killed somebody. Security escorted him out after a third of the audience fled the theater out of fear that he’d start hurting people,” Nathanael Hood tweeted.

The unnamed villain was boozing before the start of the film at the AMC Empire 25, witnesses said.

“I saw him pour a full bottle of tequila into his slushee b4 the movie started,” claimed Etai Benson. “S–t was scary – like a 4-D movie experience.”

That’s when Vegas made sure the situation didn’t get crazier than Arkham Asylum, Hood said.

He “calmly confronted the guy and de-escalated the situation until security came,” Hood tweeted. “Coming out everybody was shaking his hand and calling him a hero.

He continued: “I asked for his name and he said ‘V for Vegas.’ Not all heroes wear capes, folks.”

Nerves were already on edge for the much-anticipated flick after calls for mass shootings at screenings were posted online. The DC Comics arch-villain is believed to be a magnet for unhinged incels.

The theater — which could not immediately be reached for comment — offered free movie tickets to the disturbed patrons, Hood said.

Police had no official report of the incident or the man’s arrest, authorities said.

Despite security concerns, the “Joker” killed it at the box office with a reported $39.8 million in ticket sales Friday.