Mikado Kamizuki serves as the main antagonist of the Duel Masters: Lunatic God Saga film. He is the older brother of Luna Kamizuki, and together they are descendants of the chosen ones, a lineage known as Yaesar. Despite their family not being wealthy, both Mikado and Luna possess extraordinary Kaijudo abilities, granting them the power to summon gods themselves. Mikado is introduced as a mysterious figure who appears before the protagonist Kirifuda Shobu, carrying a deep-seated grudge against all other duelists. His primary motivation is an intense ambition to dominate, and he holds what is described as the strongest card, positioning himself as a formidable threat. His role in the story is that of the primary obstacle Shobu must overcome. His relationship with his sister Luna is a key connection, as the two share the same powerful heritage and are ultimately involved in a ritual orchestrated by a hidden organization, which seeks to exploit their divine powers. Notable abilities include his advanced Kaijudo skills, which allow him to control god-like entities. His development is limited to the film's narrative, where he acts as the central antagonist driven by resentment and a desire for power, challenging Shobu to a decisive duel.