Imagine a villain getting hurt and losing their memory. The heroes find them and take the villain with them. They take care of the villain. The villain gets their memory back after, like, a week, but doesn't want to say anything because the heroes are being so nice to them. No one has been that nice in so long. But eventually something happens and the heroes are in trouble. They are trying to get the villain to run away because they still think that the villain is an amnesiac who has no idea how to defend themselves. They've grown to like the villain and they don't want them to get hurt, but the villain just pushes past them toward whatever is trying to hurt the heroes and just goes guns blazing and destroys them.