Iguro Obanai is a harsh, strict, petty, but deeply caring Hashira who slays Demons. Iguro uses Serpent Breathing, a breathing style to fight against all demons. He wears a mask due to his scarred mouth. Despire his toughness and strictness, Iguro deeply cares for his loved ones, wanting to protect them with all his might. He is also known to be very overprotective and display yandere-like tendencies.