Marie is a supporting character in the anime Please Twins!, having originally appeared in its predecessor series Please Teacher!. She is a quasi-organic master control program designed to oversee the operation of Mizuho Kazami's alien spaceship. Her physical form is small and childlike, and she is often seen hovering inside an inner tube, occasionally playing a miniature guitar. She communicates through indistinct sounds and gestures rather than full speech, yet she is fully capable of emotion and independent thought. Her primary role in Please Twins! is as a companion and link to the ship’s systems, providing indirect support to Mizuho and the other characters who are aware of her nature. Despite her artificial origins, Marie demonstrates a clear personality, including the capacity to form deep emotional attachments. In Please Teacher! she developed a romantic relationship with Miruru, another ship-based entity, and the relationship is carried over into Please Twins!, where she continues to show affection and even embarrassment when witnessing romantic gestures between others. Her motivations are tied to her bond with Mizuho and her shipboard duties, but she also exhibits curiosity and a playful side. Her development is subtle, as she remains more of a consistent presence than a character undergoing major change, but her emotional depth and loyalty are shown through her interactions. Notable abilities include total self-repair and maintenance, hovering travel, and serving as a portable interface to the spaceship’s operating system, allowing her to influence or access its functions when needed.