François Vidocq is an E-Gene Holder affiliated with the DOGOO organization, where he acts as the strategist and leader for the missions he is assigned to. He is a young man with blond hair, ivory skin, and blue eyes, typically seen wearing a gray marine-style uniform with a red tie and white shoes.

His personality is defined by a calm demeanor combined with a ruthless, almost cruel attitude at times. Vidocq possesses nerves of steel, allowing him to think clearly and make efficient decisions even when situations become dire. He has a strong tendency to push his emotions aside, ensuring that his choices are not overly influenced by personal feelings. Nevertheless, he takes great pride in his plans and his role as the intellectual center of any operation. Vidocq seems to derive genuine satisfaction when a plan unfolds exactly as he envisioned.

As the brains of his platoon, which also includes John Hunter and Galileo, Vidocq is responsible for devising strategies to combat the Evolutionary Invasion Objects. His primary motivation is to gather as much information as possible about these enemies, including how they evolve and act. For the sake of acquiring data and completing a mission, he is willing to go to any lengths and can take seemingly emotionless actions, such as forcing a teammate to endure pain or face near-death situations.

Vidocq does not typically participate in direct combat. As an E-Gene Holder, he channels the abilities of the historical father of modern criminology, also named François Vidocq, through an AU ball. Instead of a traditional weapon, his E-Gene allows him to summon an "Easy Chair." True to his strategic nature, this chair is not used for fighting but functions as a tool to organize input data and extrapolate every possible scenario. This analytical ability is crucial for his role, allowing him to hypothesize about the Invasion Objects' behavior and formulate effective plans based on his deductions.