Fate/Stay Night: Unlimited Blade Works

[Ryllharu]

Shirou/EMIYA, Rin, and Saber only get full characterization across all three routes. Hell, even doofus Shinji.
You get fragments of their true motives and personalities from each. The different events result in those four reacting and showing very different sides to themselves.

(Illya's third route characterization is essentially repeated by Fate/Zero).

Shirou will become EMIYA any time he succumbs to despair and decides to continue to be a hero despite failing. Kiritsugu retreated from the world when he failed Iri and Illya. EMIYA just keeps carrying on because he's as much of an idiot as Shirou, believing his failures can be overcome by working more.