Suicide Squad: Jared Leto also spent time scaring passers-by to perfect Joker laugh

Not content with staying in character on set, Leto wanted to see which laugh most creeped people out

Jared Leto pulled out more stops than anyone expected to get his portrayal of the Joker just right in the upcoming Suicide Squad movie.

As well as sending his costars care packages containing used condoms and sex toys while on set, the actor, who famously stayed in character as much as possible during the film’s production, has also admitted to spending time in New York and Toronto giving shocks to unassuming members of the public.

“I worked on the laugh walking around the streets of New York and Toronto, and I kinda would walk around the streets and see what laughs would get under people’s skin,” he told CNBC’s Squawk Box, in the video below:

He added: “You know when you hear someone laugh at a restaurant? It’s a little jarring. I tried them out. And I kind of got to a place where I would laugh and people are always turning around like, ‘Who is this creepy guy behind me?’”

Leto’s pranks didn’t stop there, either. He also reportedly had a dead pig and a black rat delivered to his castmates, and admitted to arranging meetings with convicted psychopaths and “people who had committed horrendous crimes”, as well as the doctors and psychiatrists who treated them.

The film’s director, David Ayer, told Total Film that Leto’s performance was so terrifying, “when he steps onto the set the world stops. Everything stops.”

Suicide Squad is the latest film in Warner Bros’ growing DC Extended Universe. It’s due out in cinemas in Britain on 5 August.