In what ways is Tom Sawyer similar to the king and the duke

Unfortunately, Twain seems to suggest that the characters of the Duke and the Dauphin are more similar with the rest of the characters in this novel than we would like to think. They are constant tricksters, always seeking to deceive others for their own personal benefit. However, when they do so in the first performance of the Royal Nonesuch, the crowd themselves, who have just been tricked, show that they are exactly the same, willfully ...