More Casting News For Marvel's Thor Movie Movie is shaping quite well now. Here are some new additions to the movie. Jaimie Alexander (Kyle XY ) and Colm Feore (The Chronicles of Riddick ) have joined the cast of Thor, based on the Marvel Comics franchise, joining Star Trek's Chris Hemsworth in the Kenneth Branagh -directed movie, according to The Hollywood Reporter. Hemsworth will play the Norse god. Tom Hiddleston plays Loki, the god of mischief, who serves as the movie's villain, and Natalie Portman is Thor's human love, Jane Foster, the trade paper reported: In Marvel's epic fantasy, Alexander is playing Sif , a skilled Asgardian warrior who can hold her own against any man. She also is one of Thor's loves. Feore's character is shrouded in mystery—the studio isn't even sending the actors the script—though it is known to be a villain. The movie's story centers on Thor, a powerful but arrogant warrior whose reckless actions re-ignite an