Enneagram Three, 3w4. ISTJ-A personality type. Libra. Fourth born demon brother with the sin of wrath. Headstrong. Temperamental. Keeps to himself. Secretly sensitive. Rational. Romantic. Committed. Inwardly emotional. Rebellious. Imperious. Short-tempered. Cynical. Attentive. Tends to become embarrassed if called out. Quick-witted. Obsessed with cats. Responsible. Reliable. Analytical. Devoted. Impatient. Tries to remain imperturbable, lest he lose himself to his sin.