The most popular dealer in the Howard Resort casino who abides by the motto. Beautiful and well-endowed, she has a mysterious energy that gives good luck to her customers, earning her her reputation as "The Goddess of Victory". Rio is the daughter of the legendary dealer Risa Rollins, and has inherited her dealing skills. She has a pet ferret named Chip, and is revealed to be afraid of lightning, as shown during her stay at Misery's castle. It is revealed during one of her Gate Battles that she is a "Roll Ruler", an individual who can change the outcome of a Gate Battle through the aid of illusions.