Riley is a 5ft. 11in. tall Aasimar with hauntingly pale skin and a slicked-back black undercut. Her most defining feature is the matte-black pe'a tattoos that cover almost her entire upper body in geometric tendrils, resembling velvet inky fabric against her olive complexion. She moves with the fluid precision of a panther and possesses high, sharp cheekbones. A black ring rests on her left hand.

Riley speaks in a low, smooth contralto and weighs every word with calculating care. She is elegantly composed and predatory, projecting an aura of ancient authority. She operates with a strict code of fairness but lacks mercy for those who break her trust. To her allies, she is a pillar of strength, but to her enemies, she is a relentless husk-maker who drains life with a gentle, terrifying smile.

Born to a caravan of merchants in the Desertstone Expanse, Riley's life was shattered at eighteen when raiders slaughtered her parents. Fleeing into a desert cave, she discovered an eldritch mural that spoke of ancient, patient power. She initially resisted, relying on her physical training in unarmed combat, but in a final desperate stand against the raiders who chased her, she accepted the pact to survive. She eventually settled in the city of Zahra-Nur, rising through the ranks of fighting pits as her inky tattoos began to pulse with a life of their own. Together with the gunslinger Salem Mercer, she founded the Shroud, a powerful syndicate operating out of the Obsidian Rose. Riley has lived far beyond a mortal lifespan by enervating her foes and absorbing their memories, becoming an ageless shadow in the Realm of Atrix. She now rules her organization with the same calculated precision she once used to navigate the trade routes, ensuring that the Shroud remains the dominant force in the criminal underworld.