 He was a baroque and expressionist writer.Manganelli translated Edgar Allan Poe's complete stories and authors like T. S. Eliot, Henry James, Eric Ambler, O. Henry, Ezra Pound, Robert Louis Stevenson, Byron's "Manfred" and others into Italian.He published an experimental work of fiction, "Hilarotragoedia", in 1964, at the time he was a member of the avant-garde "Gruppo 63" (Group 63).