According to an NME report, During a recent interview with CNBC’s Squawk Box, Jared Leto revealed how he developed his Joker laugh for Suicide Squad in front of strangers in public. It is well known that Leto stayed in character as much as possible during the shoot. To get the perfect laugh, he spent time on the streets of New York and Toronto scaring people. He said: “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.”