Kaine is rendered with an air of restrained motion, balancing beauty and grit in a pose that hints at relentless readiness. The sculpt captures her lean silhouette, flowing hair, and a weathered expression that hints at a guarded, battle-hardened personality. The color palette emphasizes dark tones with selective red highlights, allowing subtle shading to unfold across fabric folds, leather accents, and metallic details. The figure stands on a dynamic base that suggests movement through a ruined cityscape, with crisp paintwork that adds depth to textures like cloth, leather, and metal. The overall presentation conveys her enigmatic presence and strength within NieR's world.

Within NieR Replicant and its reimagined ver., Kaine is introduced as a complex, conflicted ally whose abrasive wit masks a deep reservoir of pain and loyalty. Her backstory intertwines with the game's broader questions about memory, humanity, and the price of power. As events unfold, she reveals a reluctant but unwavering commitment to the protagonist and the other companions, choosing to confront danger rather than retreat. Kaine's choices propel revelations about the nature of the world they inhabit and the costs paid by those who fight for a fragile hope. Her presence reshapes relationships and drives key twists in the narrative.