Robert Pattinson, Kristen Stewart and Taylor Lautner have become the famous faces of the Twilight franchise. But although he's the youngest of the trio, Lautner is arguably the most relaxed during the interviews. The buff-looking 20-year-old, who's played werewolf Jacob Black in all five films, reflects on the end of the franchise: "I think there's mixed emotions for everyone. "It's a bummer it's…