Genis Sage grew up as a half-elf in Iselia, concealed alongside his sister Raine by posing as pure elves to evade persecution and integrate into the human village. This deception allowed him to attend the local school, befriending Lloyd Irving and Colette Brunel. Despite his academic brilliance and potent magical abilities—common half-elf traits—Genis developed an inferiority complex, masking his admiration for Lloyd's physical courage with sarcastic jabs at Lloyd's academic struggles. Secret visits to the Iselia Human Ranch forged a bond with the elderly prisoner Marble, whom he saw as a grandmother. Witnessing Desian guards whip Marble during a visit with Lloyd, Genis intervened with magic, unintentionally provoking a Desian assault that destroyed Iselia. Consumed by guilt, he accepted exile with Lloyd and began wearing Marble's Exsphere on his right hand, its power enhancing his magic as a constant reminder of her. Journeying to regenerate Sylvarant, Genis acted as the group's primary offensive mage, specializing in elemental fire spells and relying on allies for protection during lengthy incantations. His intelligence proved vital, solving puzzles like those on the Ossa Trail. Encountering widespread anti-half-elf prejudice in Tethe'alla ignited deep anger towards humans, clashing fiercely with his loyalty to human friends like Lloyd and Colette. This conflict intensified upon meeting Mithos, a half-elf whose shared trauma mirrored Genis's own. While Mithos embraced vengeance, Genis ultimately rejected hatred, choosing forgiveness and a vision of peaceful coexistence. He refused Mithos's alliance, defining their divergent paths. If Lloyd prioritized their bond, Genis accompanied him after the journey to locate remaining Exspheres and advocate for half-elf rights with Raine. Later, at age 14, a physically matured Genis remained deeply concerned for Lloyd. He reunited with Raine to search for his friend, aiding Emil Castagnier and Marta Lualdi in the Triet Ruins. Marta’s mention of romantic snowy walks triggered his lingering affection for Presea Combatir. Despite Lloyd’s hostile actions, Genis maintained unwavering loyalty, expressing sorrow over their fractured friendship. He later reassured Emil of Lloyd’s support during criticism over the Kharlan Tree’s destruction of Palmacosta. Genis’s journey concluded by departing alongside Lloyd if chosen in a pivotal decision, reflecting their enduring bond. Personality-wise, Genis balanced sarcasm and intellectual pride with maturity, kindness, and culinary skill. His core conflict—wavering between resentment of human prejudice and appreciation for human companions—drove his development. He admired Lloyd’s idealism yet grappled intensely with guilt over the consequences of his actions, particularly concerning Marble and Iselia’s ruin.