Stellan Skarsgård is a Swedish actor who played Bootstrap Bill Turner in the 2006 Disney adventure fantasy comedy film Pirates of the Caribbean: Dead Man's Chest and its 2007 sequel, and Dr. Erik Selvig in the Marvel action films Thor, The Avengers, the 2013 film Thor: The Dark World , the 2015 film Avengers: Age of Ultron, the 2018 film Avengers: Infinity War and the 2019 film The Avengers 4. He played the Grand Duke in the 2015 live-action fantasy film Cinderella. He also played Cerdic in King Arthur.