Prankster Kevin Hart

In the animated action comedy Captain Underpants, Kevin Hart voices a 9-year-old named George, who with his best friend hypnotises the school principal into believing that he's a superhero. Unsurprisingly, Hart admits that he was a prankster as a child. "I was pretty much always in trouble," he says, "because I didn't want to stop laughing. I loved laughing in school and making other people laugh. And in school that's the worst thing you can do in the class is be the funny guy, because then nobody is focusing. Everybody is passing around letters or pulling chairs from underneath the teacher. Or was that just me?"