Brett Kelly is a Canadian actor best known for his role as Thurman Merman in the 2003 film Bad Santa and its 2016 sequel, Bad Santa 2. He began his acting career in the early 2000s, appearing in films such as The Sandlot 2 (2005) and Unaccompanied Minors (2006). Kelly's performances often showcase his comedic timing and endearing screen presence. In recent years, he has continued to act, with roles in television series like Family Law (2021–2024).