Essay: The Hobbit Book Review. The main character of the book is Mr. Bilbo Baggins. He is the Hobbit who led the Dwarves to the Lonely Mountain to reclaim their treasure from the dragon named Smaug. Bilbo is middle aged and resides in a clean, warm burrow dug into the side of a hill. In the beginning of the story Bilbo is a very weak character. He is easily frightened, and very shy. One of his.