Lucifer

Lucifer, the Avatar of Pride and Vice President of the Student Council, serves as Diavolo's right hand. Once an angel known as The Morning Star, he led a rebellion against God and transformed into a demon, embodying strict leadership traits and sadistic punishment tendencies. He is the eldest of the seven demon brothers, notable for his black hair, red gradient eyes, and distinctive attire that includes a high-collared tailed coat and multiple unique accessories. Despite his imposing character, he shows care for his brothers and has a passion for music, particularly classical genres. Lucifer is depicted as a complex figure, balancing his controlling nature with moments of tenderness, especially towards Mammon, while navigating his past and loyalty to Diavolo.