Yes, that is quite interesting, I cannot think of a single example, but it's like when they meet their match, they're given the choice of facing themselves, or rather... their habit of ignoring themselves is removed from their repertoire of possiblities, and it's in that deep discomfort that their metal is truly tested.When you read a series of Mary Balogh’s books, it struck me sometimes the villains (I’m referring not to the psychopathic ones, rather just the damaged humans) in one book become the love interest in another. It is really interesting to read that when the character meets their match the interactions propel the couple to evolve and develop their humanity. In a previous story I find I dislike them immensely and then later in the book series, when Balogh writes their story, I find I am sympathetic towards them. Discovering all their strengths and likeable traits.
Which is always a very interesting question to ask oneself, because we're all decent and kind so long as our current conditions do not sway too drastically in one direction or another, also we're able to ignore certain aspects of our selves in the process of routinely life, but how would we behave should things drastically change, and we were unable to ignore the things we keep at bay constantly?