Jean-Michel Roger is the head of the Security that gives commands or permission to Duel Chasers to enforce a Duel whenever needed. He is a seemingly cold, serious and calculating individual. He is cunning and methodical, being able to calmly take decisions in order to ensure criminals are apprehended. He also seems to have a love for chess and uses a chessboard to represent a Duel's progress. To get his own desires he is not above manipulation, whether it be verbally or general cheating.

He is the main antagonist of the Synchro Dimension Arc.
~!Jean is actually a resident of the Fusion Dimension who crossed over to the Synchro Dimension, infiltrating the dimension by rising to the position of Director of Security, enforcing the City's law. However instead of helping Duel Academy as an infiltrator for the invasion, he betrayed them and intends to control the Synchro Dimension and turn it into his kingdom instead. He strongly detests being subordinate to another party, having turned against Leo Akaba after realizing defecting from his cause would benefit his own ambitions, and the Executive Council due to them blocking his way to absolute power.!~

Thanks to the Leo Corporation, headed by Reiji Akaba, new advancements to Solid Vision, the holographic system that gives life to the Duel Monsters card game, give physical mass to monsters and environments, allowing players to interact directly with them. This has given birth to challenging Action Duels, in which duelists may traverse environments to locate Action Cards to help them in a pinch. The story follows Yuya Sakaki, a second year middle school student at Miami City's You Show Duel School, whose father disappeared three years ago when he was scheduled for an important duel. While facing off against the current Action Duel champion, Yuya awakens a new power from his pendant, known as Pendulum Summoning.

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An Italian actor, voice actor, ADR director and TV host, mostly known for his roles as [Usopp](https://anilist.co/character/724/Usopp), [Takeshi "Gian" Gouda](https://anilist.co/character/8262/Takeshi-Gouda), [Genta Kojima](https://anilist.co/character/4251/Genta-Kojima) and [Takeshi](https://anilist.co/character/3854/Takeshi) (Brock).