Rio Kastle

Rio Kastle, known as Rio Kamishiro in the Japanese version, is a character appearing in the Yu-Gi-Oh! ZEXAL anime. She is the younger twin sister of Shark.

Appearance
Rio has dark red eyes, like her brother she has pale skin and dark purple hair with light blue bangs.

Her attire includes a white jacket over a light purple shirt, black stockings and white high heeled shoes.

History
Rio once Dueled Quattro who was operating under the orders of Vetrix. He played a card, "Flaming Hell Blessing", that set the surrounding area on fire. She was critically injured in the blaze, though Quattro carried her to safety, his face being scarred in the process.

In order to help his sister, Shark entered the National Duel Circuit and made it to the final match against Quattro. In the break room, Quattro set his Deck up to fall on the floor, causing Shark to see some of its contents. This caused him to be disqualified.

Yu-Gi-Oh! ZEXAL II
Even after the World Duel Carnival, Rio is still in the hospital, albeit with only bandages covering her eyes. For some reason Rio felt Gilag's arrival from the Barian World which causes her pain. Because of this, Reginald arrives later along with Yuma and Tori after him being called by the hospital as well as sensing Rio's pain. During that time Rio blurts out that someone is coming to take the most important thing, which worries Yuma as he knows what Rio is talking about.

Past
It is unknown to what sort of Deck she possessed as no cards were shown.