Huck Finn is the central figure. He is a boy who is rebellious against the society's norms. Jim is a significant character as he is a symbol of the oppressed slaves. He is kind - hearted and intelligent. The King and the Duke are important too. They are con - men who add a lot of chaos and adventure to the story. They deceive many people along the way. Pap, Huck's father, is also an important character. He is a drunk and represents the lowest part of society.
Huckleberry Finn is the most important character. He is the protagonist and through his eyes we experience the whole adventure. Jim is also crucial. He is a runaway slave who befriends Huck and they go on this journey together. Then there's Widow Douglas. She tries to civilize Huck and represents the proper society. And Tom Sawyer. He is Huck's friend and his ideas of adventure sometimes influence Huck.
Well, first of all, Huckleberry Finn himself. He is the one who takes us through the story, with his thoughts and actions. Jim is extremely important. He is not just a slave but a real person with feelings, dreams and hopes in the story. Tom Sawyer is a character that brings a different kind of adventure. His wild and imaginative ideas contrast with Huck's more practical approach at times. The Widow Douglas and Miss Watson also play important roles. They are the ones who try to educate and civilize Huck, which he resists at first.