Histoire, a sentient chronicle manifested to preserve Gamindustri’s history, emerges across dimensions with distinct forms and roles. Originating from a fragment of power separated by the goddess Arfoire to prevent corruption, she safeguards balance by recording events and guiding dimension-specific goddesses. In the Super Dimension, she co-governs alongside four CPUs after Arfoire’s fall, while her Hyper Dimension incarnation serves as Planeptune’s methodical Oracle, enforcing discipline among deities like Neptune and strategizing against threats such as the CFW faction. This version grapples with remorse over past lapses, notably the CPUs’ captivity during *mk2*. Her Ultra Dimension self diverges sharply, adopting a bubbly persona marked by playful speech patterns, emoticons, and a higher-pitched voice, mirroring that realm’s whimsical tone. Physically, her forms shift: the Super Dimension iteration dons scholarly attire with expressive digital gestures, the Hyper variant wears a sharp purple-and-teal ensemble exuding authority, and the Ultra incarnation sports pastel hues with a bonnet, radiating youthful energy. All share a tactical delay when accessing data, humorously justifying pauses with fabricated timelines like “three days.” Across narratives, Histoire anchors interdimensional stability. In *Victory*, she partners with her Ultra self to navigate portal systems, countering existential risks like Rei Ryghts’ destructive power. *Megadimension Neptunia VII* tasks her with resolving CPU Shift upheavals and interdimensional tech failures while backing Nepgear’s dimensional repairs. Spin-offs such as *Hyperdevotion Noire* and *Ninja Wars* repurpose her as a quest issuer or political leader, exemplified by her daimyo role in Heartland. Non-game media like *Megami Tsuushin* reinforce her as Gamindustri’s administrative nucleus, dispatching allies to ceremonial or combat duties. Though vexed by CPUs’ antics, she trusts their protective instincts. Crossovers with *Million Arthur* and *Senran Kagura* extend her influence without altering her core identity. Notable trivia highlights her French etymology (“history”), interdimensional self-syncing, and recurring visual redesigns. Poll rankings (10th/11th) underscore her enduring, albeit supporting, narrative significance—a timeless archivist balancing duty across ever-shifting realities.