In December 2009, Rene Russo was cast as Frigga, Thor's mother and Odin's wife. Later that month, actors Joseph Gatt, Troy Brenna, and Joshua Cox had been cast in the film, though none of their roles were revealed. In January 2010, Adriana Barraza had joined the film's cast, in a supporting capacity. Only days before filming began, Stuart Townsend was replaced by Joshua Dallas as Fandral, citing "creative differences". When "Spider-Man 4"s production stalled, Paramount and Marvel Entertainment pushed up the release of "Thor" by two weeks to May 6, 2011.