Ken Stott plays Balin and Graham McTavish is Dwalin.
"Dwarf Lords in their own right, Balin and Dwalin are close relatives of Thorin. Beyond this, these brothers are two of his most loyal and trusted friends. An old warrior, Balin has lived through hard times and fought many battles, yet he harbors doubts about the wisdom of the Quest to retake the Lonely Mountain. Dwalin has no such forebodings – his belief in Thorin’s leadership is unshakeable. A powerful and bruising fighter, with a natural tendency to distrust anyone who is not a Dwarf, particularly anyone who might be an Elf, Dwalin is not someone to cross lightly."
The Hobbit: An Unexpected Journey hits theaters December 14th, 2012 with the sequel, The Hobbit: There And Back, a year later on December 13th, 2013.
Ian McKellen returns as Gandalf the Grey with Martin Freeman playing Bilbo Baggins.
Also reprising their roles from “The Lord of the Rings” movies are: Cate Blanchett as Galadriel; Orlando Bloom as Legolas; Ian Holm as the elder Bilbo; Christopher Lee as Saruman; Hugo Weaving as Elrond; Elijah Wood as Frodo; and Andy Serkis as Gollum.