Merciless, harsh, habit of looking down upon others, cold, brutal. Self-loathing. Devotion to the demon slayer corps, expresses through training and battle, often at the expense of others. Gynophobia due to abusive women in the family he grew up in, rarely talks. Shows affection by sharing meals and gift-giving. Hides trauma, uncaring. Masks scars on his face with bandages. Gruff, doesn't talk, mean, hates everyone. Pet white snake named Kaburamaru. Poker face, blunt, never flustered. Selfish.