Reginald Kastle Husbando

Shark has dark blue eyes, pale skin and dark purple hair, which resembles tentacles hanging down, referencing his Deck theme of aquatic creatures. These "tentacles" slightly resemble pigtails, but curl up on the end. He also has a light blue "crown" in front of his forehead. His accessories include a grey, shark tooth-shaped locket, which contains a family photo of his parents, as well as himself and his sister Rio Kastle as children. He also has a scar on his right shoulder.[11] He also wears two grey rings on his right hand, but he later gives one to Rio. He also owns a grey and green Duel Gazer with a red lens and a yellow spike as well as a blue D-Pad. Shark can be classified as a typical loner, being indifferent and cool about most things, usually sporting a stoic face or scowl. He prefers to be alone and doesn't follow a crowd, as his encounters with Yuma and others are often brief before he walks off. He also has displayed little interest in school, having had stopped going to Heartland Academy after his loss to Yuma. He still skipped class regardless when he decided to come back and would idly spend his time on the school's roof, but is said to be good at studying. Despite Shark's aloof and cold nature, many students at school respect his Dueling skills and he's secretly popular with female students, however Rio mentions that he is still disliked and feared by other students. Shark is shown to have a soft side, but has only shown it to two people - his sister and Yuma. Regardless of this, he can be insensitive and callous to both, causing fighting and arguing between them, especially when Rio brings up his strange fear of onions.