Sekido

As the manifestation of Hantengu's anger, Sekido was in a constant state of vexation, irritation, and rage, even towards his fellow clones, which could be seen when he easily got angered when they failed to meet his expectations and were subdued by the Demon Slayers. Sekido was also seen to care very little about his brethren, as shown when he forcibly absorbed them against their will to form Zohakuten, even as Aizetsu protested. He also showed himself to be the most dominant of the emotion clones and appeared to be the leader, as he was the one who gave out orders to them and took charge at critical junctures when they were battling the Demon Slayers. Sekido (積せき怒ど Sekido?, lit. Anger) is a tall young adult man with a lean muscular build and long wavy hair that goes past his shoulders and narrow, deep red eyes that have the daiji of "Upper Rank" (上じょう弦げん Jōgen?) and "Four" (肆し Shi?) engraved into them. He has two prominent curved horns on his forehead and markings under his eyes that give his face a cracked appearance. He also has the kanji for "anger" etched into his tongue. As a demon, Sekido has pointed ears and sharp nails on each finger. He is usually seen wearing an irritated or enraged expression on his face.

Sekido wears the same kimono as Hantengu, as he is formed from Hantengu's headless body. He also wears dark hakama pants and a pair of zōri. Sekido is always seen carrying around a Khakkhara (錫しゃく杖じょう Shakujō?).