David Wheeler (born 20 March 1963), better known as David Thewlis (/ˈθjuːlɪs/), is an English actor, director, screenwriter, and author. Thewlis rose to prominence when he starred in the film Naked (1993), for which he won the Cannes Film Festival Award for Best Actor. His most commercially successful roles have been Remus Lupin in the Harry Potter franchise (2004–2011) and Sir Patrick Morgan / Ares in Wonder Woman (2017). Other film roles include Total Eclipse (1995), James and the Giant Peach (1996), Dragonheart (1996), Seven Years in Tibet (1997), Kingdom of Heaven (2005), The Boy in the Striped Pyjamas (2008), War Horse (2011), The Theory of Everything (2014), Anomalisa (2015), I'm Thinking of Ending Things (2020), and Enola Holmes 2 (2022). He will appear in Avatar 3 (2024).