Idris Elba has joined the cast of "Thor," Marvel Studios’ film centering on the Norse god of thunder.
Chris Hemsworth will star as Thor; Tom Hiddleston will play Loki, and Natalie Portman is the love interest Jane Foster.
Elba will play Heimdall; as the guardian of Asgard, he stands on the BiFrost Bridge ready to defend the city from intruders.
