There are a great many characters within The Lord of the Rings, and each of them has a part to play in the eventual downfall of Sauron and the triumph of good in the world. The movies did a timeless job of detailing their exploits and adventures with the time given to them. However, movies, while grand and epic, are not completely effective at portraying just how influential even the smaller characters of the overall story are. Many of them have not gotten their fair share of credit. In particular, Boromir does not get enough recognition for how his actions influenced the Fellowship of the Ring.
Source：https://www.cbr.com/boromir-lord-of-the-rings-most-important-character/
