Which of these is a demon and a member of Woland's entourage in "The Master and Margarita"?

Azazello (in early versions of the book, Fiello) is a character from the novel The Master and Margarita by the Russian writer Mikhail Bulgakov. A demon, a member of Woland's entourage. "The demon of the waterless desert, the killer-demon".

According to Bulgakov, Azazello "turned out to be short of stature, a fiery redhead with a fang, in a starched shirt, a good-quality striped suit, patent leather shoes, and with a bowler hat on his head. His tie was brightly coloured. The surprising thing was that from the pocket where men usually carry a handkerchief or a fountain pen, this gentleman had a gnawed chicken bone sacking out."

The Master and Margarita is a novel by a Russian writer Mikhail Bulgakov, written in the Soviet Union between 1928 and 1940 during Stalin's regime. A censored version was published in Moscow magazine in 1966–1967, after the writer's death. The manuscript was not published as a book until 1967, and then first in Paris. A samizdat version circulated that included parts cut out by official censors, and these were incorporated in a 1969 version published in Frankfurt. The novel has since been published in several languages and editions.