Orfus reigns as the primary antagonist and leader of Chaos Choir. An Edel Raid harboring deep-seated hatred toward humans, she possesses short brown hair, glasses, and an Elemental Gelade embedded in the center of her chest. Her power stems from an ancient book of prophecies detailing Edel Garden's history and potent spells, which she wields to further her ambitions. She forges React bonds with fellow Edel Raids Jilltail and Aljeena to amplify her capabilities.

Her ultimate goal harnesses Ren's status as one of the Seven Glittering Jewels to reshape the world under Edel Raid dominion. This plan culminates in her killing Cou during a confrontation, deliberately severing his Pledger bond with Ren. She remains coldly indifferent when Cou is later revived by Eve's sacrifice. However, her control over Ren shatters when Cou and Ren's mutual love awakens an ancient song symbolizing harmony between humans and Edel Raids. This event severs Orfus's React connection to Ren and unravels her ambitions.

Following this defeat, Orfus undergoes a significant shift in perspective. By the anime's conclusion, she abandons her antagonistic role and agrees to collaborate with Arc Aile, seeking peaceful coexistence between their species. Her alliance with Jilltail and Aljeena transitions into a joint effort toward a more equitable future.