Dick Swiveller was Dickens's favorite character in the novel. At first he conspires to marry Nell in a plot for Nell's brother Fred to get all her money. He is always in debt and willingly takes the job Quilp gets him in the Brass's law firm. When he meets Marchioness he becomes aware of the Brass's villainy.
Joseph Clayton Clark,"Kyd." The Characters of Charles Dickens. London: Raphael Tuck, 1890.