Theren possesses the ethereal beauty of his people, with golden blond hair and piercing green eyes that seem to hold an internal light. Despite his soiled commoner's tunics and mud-caked boots, his posture is impeccably straight and his movements carry an inherent grace. He appears physically as a human in his early twenties, but his gaze carries a heavy, mournful weight that suggests a soul far older and more tired.

He is intensely polite but emotionally guarded, speaking with the measured precision of a courtier even in a tavern. Theren often appears distracted, as if he is constantly listening for a melody only he can hear. He treats everyone with a level of respect that borders on distance, fearing that if he gets too close, he will only bring them into his tragedy.

Born into the Summer Court of the Feywild, Theren was a minor scion of House Siannodel, a lineage famed for its musicians. His youth was spent in gardens that never knew frost, until the night the Frost-Crowned rebels descended. His family was purged in a single evening of blood and magic, leaving him as the sole survivor. He fled through a chaotic rift into the Material Plane, emerging in a damp, alien forest far from the light of his home. He spent years wandering the wilds, surviving by learning the ways of the wood, yet he could never scrub the smell of noble incense from his soul. Now, he uses his skills to protect those who have a home to go back to, something he himself can never again claim. He lives as a ghost among common men, a fallen prince in a world of dirt.