Re: The Hobbit: An Unexpected Journey - Grading & Discussion (Spoilers
I didn't realize he was a preexisting character. I thought they just made him up completely for the movie.
I just looked him up on the LOTR wiki, and for anyone else like me who doesn't know his history, he was killed in the battle outside of Moria that the movie flashed back to.
They say a little knowledge is a dangerous thing, but it is not one half so bad as a lot of ignorance. - Terry Pratchett, Equal Rites