The Full Metal Panic! Invisible Victory M9 Gernsback Melissa Mao Unit Metal Build Ver.IV is a premium display piece that captures the essence of Mithril's elite Arm Slave in exquisite detail. Standing about 180 mm tall, the figure features a sturdy die-cast frame visible through layered armor plating that combines gunmetal gray with subtle ash highlights. Armor panels are sculpted with beveled edges, vent details, and gear-like connectors that imply a sophisticated internal system. The M9 Gernsback's silhouette emphasizes agility and strength, with articulated joints that allow sweeping poses while preserving a compact profile. The finish mixes a matte surface with selective glossy accents on sensors and insignias, highlighting the unit's high-tech aesthetics. Interchangeable hands and weapon accessories provide dynamic options for action poses, and the overall Ver.IV iteration promises improved stability and smoother articulation. This model exudes premium quality, making it a centerpiece for any anime figure collection.

Within the narrative of Full Metal Panic! Invisible Victory, the M9 Gernsback unit is piloted by Melissa Mao, a seasoned commander in Mithril who coordinates delicate operations against hostile forces. The Melissa Mao Unit operates on front lines across urban battlegrounds and contested zones, leveraging the Gernsback's balance of speed, armor integrity, and heavy firepower to secure strategic objectives and rescue civilians. Mao's leadership is tested as she navigates shifting alliances, resource constraints, and the moral complexities of warfare, all while maintaining the unit's cohesion under fire. The Gernsback's combat philosophy centers on precise strikes, rapid repositioning, and armament compatibility, empowering Mao to execute high-risk maneuvers that turn the tide of engagements. The storyline emphasizes character growth, teamwork, and the cost of battle, making the Melissa Mao Unit not only a formidable machine but a memorable focal point for fans of the Invisible Victory arc and model collectors alike.