Nico Nanten is a supporting character in the anime series 'Hoozuki no Reitetsu'. She is a cheerful and friendly demon who works in the Animal Hell, assisting with the care of animals and the administration of punishments. Nico stands out due to her positive attitude and dedication to her work, often brightening the otherwise somber atmosphere of Hell. Her interactions with other characters, especially with Hoozuki, add a lighter and more comedic tone to the series.