Rio's mother, a legendary casino dealer known as the Double Rs. Risa taught Rio and Rina her dealing techniques during their childhoods, and was the previous MVCD, having collected all 13 Gates. She disappeared from public eyes and disguised herself as Joker, a masked Gate Holder holding the #2 Gate, to hide herself from the Casino Guild and to protect Rio, and later challenges Rio to a Gate Battle to see if she is worthy of challenging Rina again. It is revealed by Rina that she allegedly had an affair with her father, which resulted in Rina's mother falling into a coma. Like Rio and Rina, she, too, has Roll Ruler abilities, and has the most powerful Roll Ruler in the series so far, being able to create an illusion of the Howard Resort (both inside and out) when Dana and Rio were trapped in it.

The "Howard Resort Hotel" is an entertainment destination where people gather from around the world to grab huge fortunes. In the casino is a beautiful female dealer named Rio Rollins, known far and wide as the "Goddess of Victory".<br><br>
In order to approach closer to her mother, one of history's greatest dealers, she does battle to gather up the legendary cards called "gates". Those who gather all 13 gate cards are presented with the title MVCD (Most Valuable Casino Dealer), proof that they are a top dealer.<br><br>
Set in a vast resort, an exciting battle begins with rival dealers that'll take your breath away! Throw in some "supreme comedy" and a story that makes you cry when you least expect it, these cute and sexy girls will explode off your screen! With everyone's cheer of "Leave it to Rio!", Lady Luck'll be with you, too!

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Mother of voice actress [Honoka Inoue](https://anilist.co/staff/129363/Honoka-Inoue). She has held a long-running gag of being 'eternally 17 years old'.

Risa Rollins