Dylan O'Brien (born August 26, 1991) is an American actor. He is known for his lead role as Thomas in the dystopian science-fiction adventure trilogy The Maze Runner (2014-2018) and for his role as Stiles Stilinski in the MTV television series Teen Wolf. His other work includes starring in films such as The First Time and American Assassin, and supporting roles in The Internship and Deepwater Horizon.