Raine Sage, a half-elf from Tethe'alla, relocated to Sylvarant's Iselia village with her younger brother Genis years before the main events. To evade discrimination against their mixed heritage, she posed as full elves. In Iselia, she served as the local schoolteacher, instructing students like Lloyd Irving and Colette Brunel. Her childhood involved significant trauma; around age eleven, she and infant Genis were sent through the Otherworldly Gate by their mother, Virginia, fleeing persecution from Sybak's Imperial Research Academy. This forced Raine into a maternal role for Genis from a young age. During an earlier escape from pursuers, she fell from a ship, resulting in a lasting phobia of water.
She joined Colette's initial journey as a guardian alongside Kratos, utilizing her scholarly expertise to translate ancient texts and seals in ruins. Her intense, sometimes fanatical passion for archaeology and ancient structures contrasts with her typically pragmatic and cynical demeanor, often grounding Lloyd Irving's idealism. Despite her composure, she exhibits moments of intense emotion, particularly concerning her family. Reaching the half-elf city of Exire, she confronted her mother Virginia, who suffered amnesia and delusions after years of trauma. Though initially furious at the abandonment, Raine understood it as protective after reading Virginia's diary.
In combat, Raine specializes in healing and support magic, wielding a rod or staff. Her abilities make her indispensable, capable of restoring health, curing status ailments, enhancing defenses, and occasionally employing light-based offensive spells like Ray. She prioritizes strategic logic, advocating for necessary sacrifices during critical missions, such as operating a machine to ensure Lloyd's progress despite personal risk during the confrontation with Mithos. This action nearly resulted in her death until intervention by Kratos or Zelos, depending on prior choices.
Her development involved reconciling with her past, acknowledging Virginia as "a mother who was too weak to stand up against the world's hatred." She channels this understanding into advocating for equality, aspiring to end discrimination against half-elves. Depending on her relationship with Lloyd, which can develop romantically if prioritized during key scenes like the Flanoir conversation, she may accompany him post-conflict to locate his hometown and collect Exspheres. Their potential romantic involvement is later confirmed in the sequel.
In *Dawn of the New World*, Raine reappears as a playable character, now aiding half-elves globally alongside Genis. She temporarily reunites with the protagonists while searching for Lloyd, demonstrating protective instincts by rescuing Emil and Marta from a monster at the Iselia Human Ranch. She later assists in clearing Regal Bryant's name and investigates Emil's mysterious past, sharing theories via a letter to Regal. Her archaeological enthusiasm resurfaces comically when examining damaged ruins like the Triet Ruins.
Notable traits include her notoriously poor cooking skills, attributed to experimental additions during preparation, and her complex dynamic with Genis, balancing sisterly affection with maternal authority. Her journey reflects a commitment to creating a world free of racial prejudice, informed by her own experiences of concealment and hardship.