Take a tip from Bill Sikes, He can whip what he likes, I recall he started small, He had to pick a pocket or two.
~ Fagin, singing about Bill Sikes in the film.

William "Bill" Sikes is the main antagonist of Oliver Twist. Although Fagin and Mr. Bumble are sometimes regarded as antagonists, it is Bill Sikes who provides the conflict to the story due to his violent nature and criminal tendencies - which surpassed the thieving ways of Fagin as well as the child abusing ways of Mr. Bumble and ultimately led to murder.

Bill Sikes was a brute who regularly beat his own bull terrier to the point the animal required stitches and had no remorse over using Oliver to further his criminal gain, he was involved in a relationship with the kindly Nancy but brutally murdered her when he feared she had betrayed him - the murder Sikes committed was one of the most graphic and disturbing acts of violence that Dickens had written and transformed Sikes at once into a monster.

Bill Sikes would meet his end however when he hung himself from the street rafters while trying to escape from an angry mob that had formed to hunt him down (in the 2007 miniseries he committed suicide by hanging himself in the sewers of London). In the movie adaptation Oliver!, he was fatally shot in the chest by a police officer and died hanging from a rope around his torso.

He is also the main antagonist of the play and film adaption of Oliver!. He doesn't sing in the actual film, but he does in the stage musical. 

He is also the main antagonist of Disney's 1988 film Oliver & Company, which is a modern American adaptation of the novel. His counterpart, Sykes, is a mobster loan shark and Fagin's ex-boss. 

Community content is available under CC-BY-SA unless otherwise noted.