Bilbo Baggins in "The Hobbit" by J.R.R.Tolkien

Bilbo Baggins has played a very important role in this novel by being the rescuer of the dwarves at several different occasions, and has undergone a drastic change in his personality and inner being from a hobbit content in his comfortable hobbit hole having good food and blowing smoke rings, to someone who experiences all many difficulties of life and turns out to be brave hero for the dwarves. This hobbit, though at the starting was thought to be not worth much by the dwarves, eventually turned out to be the most important member of the team that was on a long and perilous journey to retrieve their lost treasure. Firstly, he finds a ring in the Misty Mountains that makes one invisible, and with the help of that, he saves all the dwarves from being eaten by the great spiders of Mirkwood Forest. …