What's your favorite character concept?

One of my all-time favorites are elderly or terminally sick characters that are still fighters.

Like an old man using a suit of power armor or a diseased warrior.

Idk why but I simply LOVE these characters, and I'll give some examples below:

Reinhardt (overwatch)

Dreadnoughts (warhammer 40K)

Handyman (bioshock infinite)

The Leper (darkest dungeon)

I just think it's such a cool concept.