Sekido is a tall young adult man with a lean muscular build and long black wavy hair that goes past his shoulders and narrow deep red eyes. He has two prominent curved horns on his forehead. He also has the kanji for "anger" etched into his tongue. Sekido has pointed ears and sharp nails on each finger. Sekido wears a kimono and dark hakama pants and a pair of zōri. Sekido is always seen carrying around a Khakkhara. Sekido was in a constant state of vexation, irritation, and rage.