By skyforbes 
-
Light Yagami (Death Note Manga) – After killing thousand of criminals and even innocent people in the name of his “perfect” world, he cowers in fear at the fact that he is the one being written into the Death Note, no different than the fate he inflicted on countless others.
-
Sentinel Prime (Transformers: Dark of the Moon) – Believes in sacrificing the entire Earth for the sake of Cybertron, but when Optimus chooses to sacrifice him for the sake of Earth, he begs the Autobot leader to stop.
-
Ra's Al Ghul (DC Comics/Batman) – While his exact goal has changed over the years, he generally always seeks to cull the human population for a better world. His greatest fear, ironically enough, is his own death, given that as an immortal it’s not a certainty for him.