Michael Gedouin is a major antagonist in the Shimane Illuminati Saga of Blue Exorcist. He serves as the head doctor and chief scientist of the Illuminati's Far East Laboratory, overseeing cruel experiments involving demons and human subjects. Physically, he is a short, overweight man with a round face, curly light-colored hair, wide eyes, thick eyelashes, a snub nose, and large lips and teeth. He is often seen with an arrogant and rude demeanor, frequently letting out a harsh, mocking laugh. His personality is psychopathic and sadistic; he considers those around him as nothing more than test subjects and looks down on everyone. His primary motivation is an obsessive admiration and adoration for Lucifer, the commander-in-chief of the Illuminati, whose praise he desperately seeks. This drives him to pursue the secrets of immortality through his elixir research, using unethical methods such as creating zombies from possessed human corpses and conducting twisted experiments. In the story, Gedouin organizes the capture of the demon Tamamo Kamiki as part of his experiments. He devises a plan to separate Rin Okumura and his team, forcing each member to face a unique demonic threat alone in the underground laboratory. Despite his devotion, Gedouin's disobedience of direct orders from Lucifer ultimately leads to his demise, as Lucifer himself kills him. Gedouin's key relationships include his subordinate status to Lucifer and his role as a direct opponent to Rin and the exorcists. He has no notable allies among the main cast, and his development is limited to a steady descent into fanaticism and self-destruction. His notable abilities are primarily scientific and organizational; he is not shown as a powerful combatant but rather as a manipulative and resourceful scientist who uses demonic research and traps to achieve his goals.