Leto gave everyone a dildo and a switchblade when they wrapped shooting
“The wrap gift was his fun way of getting back at all of us,” Fukuhara told EW. “I wanted to keep everything.” Warning: Suicide Squad side effects may include an inclination to method act.
He constantly gave birth to himself
Hey, director David Ayer's words, not ours. “He constantly has to give birth to himself; he goes away, he comes back, he shoots, he goes away... The Joker is something you have to be, and you can see how exhausting and painful it is for him to be this character. But you can feel it when he comes to work, the crew feels it, everyone feels it. It’s like the birds stop flying. He’s fucking terrifying.”
He acted like an animal in the dressing room
When Suicide Squad costume designer Rene Fontana first met Leto, he told her up front that he was going to "come in like the Joker." Incredibly, Fontana did not resort to violence. "Sometimes he tried to terrify us, but we’re strong women. He was growling at us, and we’d play back.”