CJ from the Dawn of the Dead remake is pretty much the archetype for this one for me. Introduced as a dickhead character. Slowly becomes socialised and more important to the group of survivors and then becomes more and more of a badass as the film concludes and then goes out in a heroic way.
Also Shea Wigham’s character in Kong: Skull Island, because of the world weary way in which he decides to sacrifice himself to attempt to save his friends.
What do you say DiS?