Logan, in Logan. He's a grumpy bastard who can't get over himself and swears at kids - although for pretty good reasons.
Actually Logan was the first time I've felt any kind of sympathy for the character - I mean, everyone loses people but it isn't until his last film that he really learns what it means to be human, by facing his own mortality and real physical pain.
Having said all that,he's still a hero, and when push comes to shove he does the right thing - at the cost of his life.
That image of him gasping for breath as he stumbles through the forest trying to reach the kids (before he takes the super serum) was really moving, because he was so different from the invincible Wolverine we've seen all along - just a crippled old man, out of breath and killing himself to protect those kids. That was a very powerful moment, I thought.
But then Logan is a great cbm.
IMO Deadpool is just an 4$$hole, not really much of a hero at all.