Jaimie Alexander and Colm Feore are coming aboard to “Thor”, the Marvel Studios adaptation of its comic book featuring the Norse god of thunder.

Alexander and Feore join Chris Hemsworth, already cast as Thor; Tom Hiddleston, who plays Loki, the god of mischief who serves as the movie’s villain; and Natalie Portman is Thor’s human love, Jane Foster.  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 ancient war. As punishment, Thor is cast down to Earth and forced to live among humans. Once here, he learns what it takes to be a true hero when the most dangerous villain of his world sends dark forces of Asgard to invade Earth.

Marvel Studios, which is now part of Disney after a $4billion acquisition deal, set “Thor” for release on May 20, 2011.