Stellan Skarsgard joins Jaimie Alexander and Natalie Portman in Marvel’s Thor Stellan Skarsgard has joined the cast of Kenneth Branagh’s Thor movie. Skarsgard joins Jaimie Alexander Colm Feore, Chris Hemsworth, Tom Hiddleston and Natalie Portman, who have been previously confirmed for the project. Hemsworth will play the title role, while Portman is the love interest, nurse Jane Foster. Hiddleston is cast as villain Loki. It is not yet known who Skarsgard will play in the film. Thor is scheduled for release in May 2011.