Sesshoumaru is a powerful demon lord in InuYasha and the elder half-brother of InuYasha. Proud, cold, and highly skilled in combat, he initially views humans and weaker beings with contempt. Over time, he becomes a complex recurring character whose actions often influence the main conflict and the growth of other characters. He is known for his elegant appearance, immense strength, and mastery of his sword, Tenseiga, making him one of the most formidable figures in the series.