Frenchie

Jean-Paul DuChamp was once involved with a DGSE intelligence secret agent, Isabelle Kristel. When the relationship ended, DuChamp joined the French Foreign Legion, and ultimately became a soldier of fortune in order to forget about her. While on one of his merc for hire missions in Africa, he befriended fellow mercenary Marc Spector, who nicknamed him "Frenchie". He was mainly a pilot when on assignment with Spector and they eventually both found employment alongside Raoul Bushman. Spector turned against Bushman when he led a raid on Selima, Egypt in which Bushman murdered Dr. Peter Alraune, Sr at his archaeological dig of the Tomb of King Sety II. Defeated by Bushman, Spector was left in the desert to die but Spector was seemingly brought back to life by the Egyptian god Khonshu, and he became Khonshu's instrument of vengeance. Rejuvinated by Khonshu, Spector received the help of Jean-Paul and attacked Bushman's forces that evening. Jean-Paul and Peter's daughter Marlene Alraune became Spector's trusted confidants while Spector adopted a costumed identity as Moon Knight and became a New York-based crime fighter. Jean-Paul designed and piloted Moon Knight's personal aircraft, the Mooncopter.

Under the guise of "Monsieur LeBlanc", Jean-Paul infiltrated the ranks of the crime cartel The Committee alongside Spector. Exploiting Moon Knight's obscurity, "LeBlanc" arranged for the Committee to "create" Moon Knight as their own agent, and hired Spector to capture the Werewolf (Jack Russell) for them. Moon Knight eventually released Russell from their captivity after playing along with the Committee's plans. Jean-Paul continued to spy upon the Committee until Moon Knight finally dismantled the organization. Jean-Paul helped Moon Knight capture Cajun Creed after he murdered Isabelle Kristel shortly after they had reunited during one of her assignments.

Jean-Paul aided Moon Knight in many adventures, even after the criminal Killer Shrike nearly killed him by crashing the Mooncopter; however, when Moon Knight's brother Randall Spector set off an explosion at Spector Manor, Jean-Paul's legs were crushed by debris, and he was crippled. Despite his injuries limiting his ability to pilot, Jean-Paul continued to assist Moon Knight. Jean-Paul had a new girlfriend, Chloe Tran, who revealed herself to be a member of the Knights Templar, an ancient order engaged in a centuries-long conflict with the Hellbent, a race of supernatural creatures. He quickly discovered he was the Bloodline, and possessed a post-hypnotic ability to transform into any of his ancestors through concentration. With his new abilities, Jean-Paul helped Moon Knight combat the Hellbent, but Moon Knight seemingly died in battle with Hellbent leader Seth Phalkon.

Spector was resurrected by Khonshu as Moon Knight once again and Jean-Paul served as his pilot; however, after breaking his own legs in a vicious fight with Bushman, Spector became indignant toward his friends and drove Jean-Paul away. Jean-Paul became involved with Rob Silverman after embracing his long-concealed homosexuality, opening the restaurant "En Table" with him.

When a new Committee sought revenge on Spector for the earlier organization's defeat, they had an agent give DuChamp a terrible beating; however, they miscalculated the effect this would have on Spector who resumed his Moon Knight guise to destroy the new Committee. Jean-Paul remains Moon Knight's ally, but offered up Spector's young long-time associate Ray Landers to serve as his new pilot. Rob currently serves as Spector's physical therapist.