Although he is never actually seen in the book, Holden mentions him a few times.
Holden is not a big fan of Luce's work and considers him to be a phony because of his seemingly pretentious writing style. Holden also believes that Luce is not very intelligent and has no real talent as a writer.
Despite Holden's negative opinion of him, Luce is actually a very successful writer and is well-respected in the literary world. He has published several novels and short stories, and his work has been praised by critics for its originality and depth.