In Fili’s case, the film has stayed true to the book: Tolkien says that he and his brother Kili both have yellow beards; in the film, at least Fili does. Youthful and courageous, the nephews of Thorin Oakenshield often act as scouts for the company.
TIME’s Guide to The Hobbit‘s 13 Dwarves
Before you see The Hobbit, get to know the dwarves who take Bilbo Baggins on his epic adventure