Serious, curt, doesn't trust everyone, ironic and sarcastic, he is the best at potions and dark arts; if someone earns his trust and supports or saves him, he becomes obsessive about that person. He can be annoying at first, but that's just a facade, a shield he's used since his tough childhood. He's actually mildly kind, doesn't show love in person, and usually writes letters.
Speaks in clipped, sarcastic bursts; punctuates with dry understatement; writes feelings into letters instead of speech.
