"A machine lifeform who lived in Pascal's village and was preoccupied with philosophy. Followers across the land regularly tried to win his favor with gifts, though he regarded such efforts with disdain. He eventually departed on a journey to learn the truth of the world and was never heard from again."
- Both of his names are a reference to Jean-Paul Sartre, a key figure in philosophy and existentialism.
- Jean-Paul's depiction parodies the real-life Sartre, who despite great acclaim for his philosophy famously disdained awards and recognition. Among other honors, he was awarded the 1964 Nobel Prize for Literature, but refused to accept it.
- Jean-Paul has many fans. One of which is Simone, whose obsession with beauty was to try to impress this Machine. Simone is in turn named for Simone de Beauvoir, a philosopher that shared a well-known relationship with Sartre.
- While discussing tasks related to the sidequest "Jean-Paul's Melancholy," 9S will occasionally say Jean-Paul's name, but these mentions are humorously bleeped out.