Protagonist/antagonist profile

Silence of the lambs
Dr. Hannibal Lecter is a brilliant psychiatrist and cannibalistic serial killer
Lecter was one of two primary antagonists in The Silence of the Lambs. In the third novel, Hannibal, Lecter becomes the main character. His role as protagonist continues into Hannibal Rising.
Hannibal Lecter is described as being small and sleek, and with wiry strength in his arms
His plot builds up through the story as he becomes a bigger more main character you find out more about him.

No Country For Old Men
Anton Chigurh is an emotionless, compassionless killing machine. His inability to comprehend human life is matched only by his ability to take it, as he does with ruthless abandon throughout the running of No Country For Old Men. Hired to track down drug money by a group of Americans, he quickly kills those who hired him and begins to search for the money on his own

Psycho
Inspired by the ghoulish real-life murderer Ed Gein, Robert Bloch created Norman Bates as the protagonist of his novel, psycho. Norman is a fat middle-aged drunkard who has an unnaturally close relationship with his mother. He runs the motel his mother owns; but Mother is insane; and when she suspects Norman of desiring an attractive young guest, she sneaks into the girl's room and stabs her to death as she showers. Norman covers up the murder; but Mother soon kills a private investigator hired to find the girl.