Everything that has befallen him is his fault, but he will never, ever admit that. He will project onto everyone around him, and rewrite events to his liking. Were he to lash out at an enemy or community in Barovia, he would quickly paint it as something inevitable. 3/

Their (perceived or real) actions DEMANDED his response. He "had no choice but to utterly destroy them" he'll say, and expect you to agree. He is extremely dangerous, not just because of his terrifying power, but because he will react poorly to anything or anyone who might challenge that power. 4/