Who could forget this mischievous little face? That's right, Mason Gamble played none other than everybody's favorite naughty child, Dennis the Menace. Gamble scored the role when he was just seven years old and won out over a reported 20,000 other boys. The film, released in 1993, was a box office success and we all thought this little cutie was going to move on to bigger and better things.
Though he appeared in some films, including Rushmore, Anya's Bell, Arlington Road, and Spy Hard, Gamble had pretty much disappeared off the scene by the end of the 90s. He has made one-off appearances on TV shows, including ER, Kate Brasher, and CSI: Miami, but nothing really stuck. He is now enjoying his full-time career as a marine biologist, which we have to admit sounds even cooler than being an actor.