The antagonist and uncle to Nicholas, characterized by his wealth and greed; he often acts in self-interest and is a powerful yet isolated figure.

Nicholas's sister, a young woman of moral integrity who faces harassment but remains devoted to her family and their welfare.

The mother of Nicholas and Kate, who is easily influenced by powerful men but ultimately hopes for her family’s happiness and stability.

An antagonist running a boarding school, known for his abusive treatment of pupils and manipulative efforts to maintain control.

A vulnerable and neglected boy at Dotheboys Hall who forms a deep bond with Nicholas, becoming a symbol of innocence and friendship.

A character working for Ralph Nickleby, though covertly assisting Nicholas and aligning himself against Ralph's schemes.

A benevolent businessman who offers Nicholas job opportunities and support, playing a role in changing the Nickleby family's fortunes.

A virtuous and beautiful young woman dedicated to her father, representing the challenges women face in a patriarchal society.

A foil to Nicholas who uses his social status for personal gain and indulges in hedonistic pursuits without considering consequences.