Reginald Kastle | Yu-Gi-Oh! Wiki | Fandom
Reginald Kastle, known as Ryouga Kamishiro (神 (かみ) 代 (しろ) 凌 (りょう) 牙 (が) , Kamishiro Ryōga) in the manga and Japanese version and nicknamed "Shark" (シャーク, Shāku) in all versions, is one of the main characters and the final antagonist in Yu-Gi-Oh! ZEXAL other than the unseen threat to Astral World.He is one of Yuma Tsukumo's close friends and rivals.
DA: 98 PA: 56 MOZ Rank: 34