Bilbo Baggins is the main character of the book "The Hobbit, or There and Back Again" by J.R.R. Tolkien. He is a hobbit, which means he is a small creature with hairy feet and a love for food and comfort. He lives in a cozy hole under a hill called Bag End. He comes from a wealthy family of respectable hobbits who never go on adventures or do anything unexpected.

But one day, his peaceful life is turned upside down when he meets Gandalf, a mysterious wizard who invites him to join a group of thirteen dwarves on a quest to reclaim their treasure from a dragon named Smaug. Bilbo is reluctant at first, but he agrees to go as their "burglar", hoping to find some excitement and maybe some gold.

On his journey, Bilbo faces many dangers and challenges, such as trolls, goblins, spiders, elves, men, and of course, the dragon. He also finds a magic ring that makes him invisible and helps him out of many tight spots. He meets Gollum, a creepy creature who lives in the dark and has a riddle contest with him. He becomes friends with some of the dwarves, especially Thorin Oakenshield, their leader. He also learns a lot about himself and his courage, cleverness, and kindness.

Bilbo changes a lot during his adventure. He becomes more brave, adventurous, and wise. He also becomes more generous and compassionate. He helps the dwarves fight against their enemies, but he also tries to prevent a war by giving away the Arkenstone, a precious jewel that Thorin covets. He values peace and friendship more than gold and glory.

Bilbo is a very likable and relatable character. He is funny, curious, loyal, and humble. He enjoys simple pleasures like smoking his pipe, reading maps, and eating good food. He also has a sense of wonder and curiosity that makes him explore new places and meet new people. He is not perfect, though. He sometimes complains, lies, or steals. But he always tries to do the right thing and make up for his mistakes.

Bilbo Baggins is an example of an unlikely hero who goes on an epic journey and grows as a person. He shows us that anyone can have an adventure and make a difference in the world.