Conversation so far:
How old is Holden Caulfield at the end of the book
Holden Caulfield  - The protagonist and narrator of the novel, Holden is a sixteen-year-old junior who has just been expelled for academic failure from a school called Pencey Prep
How is the narrator Holden Caulfield's character portrayed in the book
Holden Caulfield is portrayed as someone uncomfortable with his own weaknesses, and at times displays as much phoniness, meanness, and superficiality as anyone else in the book.
When did the first story of Holden Caulfield's appear
Salinger's first Holden Caulfield story, I'm Crazy, appeared in Collier's on December 22, 1945, a year and a half before this movie was released.
What was peculiar about Holden Caulfield in the book
The most noticeable of Holden’s “peculiarities” is how extremely judgmental he is of almost everything and everybody.

Question: What else was peculiar about the character
Self-contained rewrite: What else was peculiar about Holden Caulfield's the character