Huck in the book has little sense of humor which is ironic considering the book is satirical. Twain has also been criticized about Huck's character, in that it seems as though Huck knows to much for his age. In one of the movies, Huck was about 17, in another he was about 8, I figure from the book that Huck is probably around 12, maybe 13. Other traits of Huck show that he is sensible, trustworthy, tricky, deceiving, realist, yet imaginative.
Widow Douglas: Hucks other guardian. She is strongly religious, however, is not as oppressive as her sister Miss Watson.
Judge Thatcher: The Judge holds Hucks money for him. He also tried to reform Pap, which he gave Pap a new coat, however, Pap just sold it for whiskey.
Jo Harper, Ben Rogers, Tommy Barnes: More of Tom and Huck's friends. Just small bit parts for these guys.
Jake Packard, Jim Turner, and Bill: These are the three individuals whom Huck trapped on a sinking boat. Bill was the third accomplice in which the other two were turning on.
Mrs. Loftus: This is the lady which figures out Huck's design.
The Watchman: Huck fetches this guy to try and save Jake, Jim, and Bill.
"Old man Grangerford: He is the father of the Grangerford and is very honorable.
Buck Grangerford: This is the son of Mr. Grangerford. He befriends Huck and set's fire to the feud by shooting at a Shepardson from behind a bush.
Sophia Grangerford: She starts the final day of the feud by falling in love and running off with one of the Shepardsons.
Emmeline Grangerford: The dead daughter of the Grangerfords, whose art and poetry skills are worshipped by her parents despite total lack of ability.
The Shepardsons: The rivals of the Grangerfords.
Boggs: The man Colonel Sherburn kills because of his drunkenness.
Colonel Sherburn: Gets away with killing Boggs by yelling at the lynch mob who was coming after him.
Buck Harkness: The leader of the lynch mob coming after the Colonel.
Mary Jane, Susan, and Joanna Wilks: The three nieces of Peter Wilks. Mary is the oldest, Joanna has a hare-lip. All three are very nice, the youngest, Joanna, nearly figures out the Duke and Dauphin's plan by questioning Huck.
William, Harvey and Peter Wilks: These are the three brothers, Peter has died, and the Duke and Dauphin are portraying William and Harvey. Wiilliam is mute.
Dr. Robinson & Levi Bell: They attempt to convince the Wilks of the Duke and Dauphin's true identities.
Silas Phelps: He is Tom Sawyer's uncle, and has gained possession of Jim from the Duke and Dauphin.
Mark Twain: He is the author of the book, and according to Huck, related through his writings, "he told the truth, mainly. There were things that he stretched".
You and Me (The reader): We the reader play a small part to, as Huck does acknowledge us from time to time, that's awful nice of him.