Also known as: ダイナソー竜崎
A character from the Yu-Gi-Oh! Duel Monsters manga and anime who uses Dinosaur-type (and some Dragon-type) cards. Known as "Rex Raptor" in the English dub.
Ryuzaki initially owns a copy of Red-Eyes Black Dragon, but loses it to Jonouchi Katsuya after wagering it in their Duel.