John Stellan Skarsgård is a Swedish actor. He is best known for his work as Prof. Gerald Lambeau in Good Will Hunting (1997), Bootstrap Bill in Pirates of the Caribbean: Dead Man's Chest (2006) and Pirates of the Caribbean: At World's End (2007), Bill Anderson in Mamma Mia! (2008), Martin Vanger in The Girl With the Dragon Tattoo (2011), Dr. Erik Selvig in Thor (2011), The Avengers (2012), Thor: The Dark World (2013) and Avengers: Age of Ultron (2015).
Skarsgård was born in Gothenburg, Sweden; the son of Gudrun (née Larsson) and Jan Skarsgård. He moved often in his childhood and lived, amongst other places, in Helsingborg, Totebo, Kalmar, Marielund and Uppsala. Skarsgård started his acting career early and by the age of 21 his experience in film, TV and stage was considerable. Most of his early roles were in Swedish television (such as Bombi Bitt) and films. Of Skarsgård’s Swedish film work, he is perhaps best known for his portrayal of Swedish diplomat Raoul Wallenberg, who worked to save Holocaust victims