Hugo Renard is a character from the one-shot manga Rohan at the Louvre and its live-action film adaptation. He works as a firefighter and is a member of the security services at the Louvre Museum in Paris, a position that grants him access to all of the museum's rooms and knowledge of its secret passages. In the film version, he is secretly part of an art theft group, using his official role to facilitate the forgery and smuggling of priceless paintings by retrieving originals from storage and replacing them with forgeries.

In the manga, Hugo Renard is portrayed as a large, muscular man with a buzz cut hairstyle, wearing a firefighter's uniform. His personality in the original manga is not extensively explored, but he is shown as a professional member of the security team who leads the way for Rohan and the others when they search for the cursed painting. He shows a moment of uncertainty when he sees something moving in the dark warehouse but dismisses it as a rat, attempting to remain practical and unafraid.

The live-action film expands his character considerably. In this version, Hugo is psychologically skilled and able to conceal his emotions and guilt when accused by Rohan, maintaining a stiff expression and unwavering gaze to avoid revealing his leader's identity. He is also knowledgeable about paintings, which is necessary for his role in the theft ring. After his partner Nicolas is killed by a supernatural force in the warehouse, Hugo abandons his composure and becomes enraged, paranoid, and violent. He no longer trusts anyone, including his own leader, and acts on impulse, first trying to attack Rohan and then lunging at another character with a knife.

Hugo's primary motivation in the film is tied to his personal history. His ultimate fate of setting himself on fire is a direct result of a deep-seated regret connected to his grandfather. The narrative suggests that Hugo is haunted by a past tragedy caused by his grandfather's madness, and seeing the victims of that event in the darkness of the Louvre warehouse drives him to his final, desperate act.

Hugo's role in the story is as a guide and then an obstacle. He initially escorts Rohan to the sealed-off storage area known as Z-13, providing the keys and leading the way with a flashlight. His presence helps move the plot toward the discovery of the supernatural painting. After his partner's death, his breakdown and violent actions serve to escalate the danger of the situation. His death by self-immolation is a direct consequence of the painting's curse, which forces those with deep regrets to confront them.

His key relationship is with his partner, Nicolas Thomas. The two work as a team within both the museum security and the art theft ring. Hugo's emotional state completely unravels following Nicolas's death, demonstrating how central this partnership was to his stability. He also has a relationship with the leader of the theft group, Ryunosuke Tatsumi, though his paranoia leads him to break this bond as well.

Hugo's development is a sharp descent from a calm professional into a berserk and paranoid individual. He begins as a composed figure capable of hiding his criminal involvement, but the supernatural events in the warehouse strip away his control. His loss of trust and his final, panicked decision to set himself on fire show a complete psychological collapse.

Notable abilities include his professional firefighter training, his familiarity with the Louvre's layout and security protocols, and his physical strength. In the film, he also demonstrates a specific psychological ability to control his own expressions and body language to avoid detection while lying. He is also capable of using a knife as a weapon when enraged.