Alexander Skarsgård plays the role of Eric Northman. He was born in Sweden on August 25, 1976 and is the son of film actor Stellan Skarsgård. In several scenes throughout the show, he has spoken Swedish. He has been part of the starring cast since the episode "Escape from Dragon House" and remains a starring cast member for the sixth season.
Skarsgård has acted in several Swedish TV series and movies and served in the Swedish Marines. In 2003 he was nominated for a Guldbagge for male supporting role in the movie Hundtricket - The Movie (English title: The Dog Trick). He revealed to the New York Daily News he used to be an anti-terrorist marine in Sweden.