Smaug is a fictional dragon and the primary antagonist in J. R. R. Tolkien's 1937 novel The Hobbit. He is a powerful, intelligent, malevolent and fearsome dragon who invaded the Dwarf kingdom of Erebor 150 years prior to the events described in the novel. A group of 13 Dwarves mounted a quest to take the kingdom back, aided by the wizard Gandalf and the Hobbit Bilbo Baggins. Smaug is described as "a most specially greedy, strong and wicked worm". Smaug appears in the Hobbit film adaption as one of the main antagonists.