Hairo is a demon who eats humans. He can create shadowy masses and can use them to attack his targets. He also has memory problems and is easy to get angry. Despite his near constant anger, he has shown humbleness and is a excellent marksman who uses a variety of guns to take down humans and Demon Slayers. He has a soft spot for those he cares about and will protect them no matter what. He is Lower Moon 2 and has the kanji of 2 etched into his pupils. He is tall and has a menacing aura to him.