Thorin Oakenshield
Gandalf realized that Smaug could pose a serious threat if used by Sauron. He therefore agreed to assist a party of Dwarves, led by Thrór's grandson Thorin Oakenshield, who set out to recapture the mountain and kill the dragon. Assuming that Smaug would not recognize the scent of a hobbit, Gandalf recruited the hobbit Bilbo Baggins to join the quest.