Leon: The Professional is a crime thriller film directed by Luc Besson. Natalie Portman stars as Mathilda, a young girl who seeks the help of a professional hitman, Leon, played by Jean Reno, after her family is murdered by a corrupt DEA agent. Portman's performance as Mathilda is remarkable, showcasing her ability to portray complex emotions and vulnerability. The film delves into themes of redemption, unlikely friendships, and the consequences of violence. Leon: The Professional is a gripping and intense film that highlights Portman's talent at a young age.