"And in the end the lesson was learned,
The Emperor knew you must suffer to be saved,
And he set out to save the world."This character righteously murders and tortures people for their own good. No, not self-righteously. Righteously. After all, no horrors in life could possible compare to eternal damnation in Hell. Yes, he is really willing to go the extra mile to save their souls. Unless they are Always Chaotic Evil, of course: In that case he simply do whatever is in his power to exterminate them, up to and including finding a Final Solution. If he showed up in Real Life, any reasonable person would consider him a Windmill Crusader or worse. But this is not real life. An in-story audience may or may not know it, but all his actions are completely justified. Word of God says he is not deluded, the threats he is facing are not windmills, and given the circumstances... he is actually doing the right thing. Mostly an Undead Horse Trope. Compare Heaven Seeker and The Soulsaver, who do not use so harsh methods, and thus can be good regardless of if the beliefs are justified or not. Also compare Psychopomp. Contrast Windmill Crusader, who might incorrectly believe himself to save souls, and Knight Templar, who may or may not actually save souls but either way isn't justified in his over-zealousness. Compare and contrast Heteronormative Crusader, who depending on the setting might be either a Windmill Crusader or a Soulsaving Crusader. There is significant overlap with The Extremist Was Right, though the extremist can have any motivation. Please note that this trope depend on the audience being able to see the setting/universe from the outside, and that it thus cannot have any Real Life examples — subverted or otherwise.
— Fireaxe, Food For The Gods, "The Lesson Learned"
Examples:Anime and Manga