Bill Sikes and his sidekick Bullseye the dog are the feared villains of the novel. Bill has a dark, austere appearance and a black heart and cares for no-one and nothing except money and possessions. However, he will look after people if he needs something from them. For example, he ensures Oliver is fed before taking him out thieving.

He is violent to Nancy and his strength is terrifying to those around him. His comeuppance is in death, and an un-heroic death at that.