Madonis

Madonis is a villainous supporting character in the light novel, manga, and anime series The Testament of Sister New Devil (Shinmai Maō no Testament). Madonis is a textbook antagonist who views others strictly as tools or obstacles. He shows a complete lack of empathy for both his subordinates and the general population of the Demon Realm. True to his sin of "Greed," his actions are driven entirely by a thirst for absolute control. He believes himself superior to the younger generation of demons and handles his political influence with immense cruelty. He is entirely willing to execute mass massacres and genocidal plots within the Demon Realm to consolidate the Council's power and eliminate political opposition. Madonis serves as one of the behind-the-scenes instigators plotting against the main cast. However, his arrogance ultimately leads to his downfall. He meets a swift and grim end when he is decapitated by Liala, the younger sister of the previous Demon Lord, serving as a brutal poetic justice for his manipulative schemes.