Zan Gu stands as a significant antagonist, commanding his minion Doropo to inflict widespread destruction and suffering across their targeted world. He pursues an unwavering, undisclosed goal through ruthless means. Visually, he cuts an intimidating figure distinguished by a stark white animal skull mask concealing skeletal features and prominent burning red eyes. A long black cloak with bright red lining drapes over a mechanical frame, contributing a distinct futuristic, science-fiction aesthetic that contrasts sharply with the surrounding steampunk and magical setting. He functions as the primary obstacle for protagonist Akane and her companions. His motivations drive him to disrupt the world's natural order, specifically targeting the vital rain ceremony and exacerbating a catastrophic drought. Despite this destructive role, Zan Gu exhibits complex layers beyond simple villainy. Possessing the ability to manipulate the universe's magic for protection and healing, he demonstrates a potential capacity for benevolence. He maintains a quiet reserve and mystery, initially presenting ulterior motives toward Akane before revealing a capacity for good-natured influence. His abilities center on a command of potent magic. Tasked with safeguarding vital magical objects, he also wields the power to heal physical, emotional, and mental distress. This duality positions him as a complex figure embodying both antagonistic force and potential sage within the narrative.