Who could forget dorky Thurman Merman from Bad Santa? This unknown kid practically stole the show, which is difficult to do when you're starring alongside Billy Bob Thornton. Brett Kelly was only ten years old when he scored his first big time role and he has since starred in a bunch of other stuff too, including Trick 'r Treat, The Sandlot 2, Like Mike 2, Unaccompanied Minors, and, of course, Bad Santa 2.
Fortunately for Kelly, his career has been going well and he hasn't developed any drug addictions. He is 24 now and continues to snag pretty decent acting roles. His most recent blockbuster film credit is Bad Santa 2, which was released in 2016. You can tell that he's Thurman Merman despite all of the growing up he's done, but we still probably wouldn't recognize him on the street!