Thor's Brother Will Be In Spielberg's Next Film

And another relatively unknown young actor is said to have been cast as the lead. Read on for more. "Thor" star Tom Hiddleston has been cast as one of the leads in Steven Spielberg's "War Horse." The news appeared in the latest issue of Production Weekly, and was corroborated to TheWrap by a person familiar with correspondence related to the casting. The casting makes sense to Deal Central, as Hiddleston is expected to break out next year in Marvel's "Thor," in which he plays the title character's adopted brother and nemesis Loki.  Rumblings from the set indicate that Hiddleston steals the show as the villainous God of Mischief.  He's expected to reprise the role in "The Avengers."Additionally, The Playlist reports that Spielberg has cast Eddie Redmayne ("The Good Shepherd," "Elizabeth: The Golden Age") as the film's protagonist, Albert. For those of you who forgot: Adapted from Michael Morpurgo's acclaimed 1982 children's novel, "War Horse" follows a young man named Albert whose beloved horse, Joey, is sold to the cavalry and sent off for active duty in World War I.