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Rex Raptor

Rex Raptor




Dainasō Ryūzaki

English (Manga)

Dinosaur Ryuzaki

English (Anime)

Rex Raptor

Debut (Manga)

Yu-Gi-Oh! Duelist - Duel 001

Debut (Anime)

Yu-Gi-Oh! - Episode 002

Appears in




December 29




165 cm1.65 m
5.413 ft
64.961 in


52 kg114.64 lb



Blood type




Seiyū (Japanese)
Voice actor(s) (English)

Rex Raptor, known as Dinosaur Ryuzaki, in the manga and Japanese anime, is a dinosaur duelist. Despite his introduction as a powerful duelist, he becomes a source of humiliation along with his companion Weevil Underwood after suffering defeat to Joey Wheeler and Yugi Muto. Rex develops into a rival of Joey. Rex is vengeful, arrogant, and tyrannical. Yet, he is confident and plays fairly.

"Dinosaur" is a nickname; "Ryuzaki" is his given name. In the English anime, he is named after the Tyrannosaurus Rex and the Velociraptor, two types of dinosaurs.

In the Japanese anime Ryuzaki speaks with a Yokohama accent.



Rex's design incorporates multiple layers of clothing and a wide range of expressions. Depicted here is the duelist in full regalia from front and side views and alongside views of his head from different angles.

Rex's character design was overseen by Kazuki Takahashi. His usual outfit consists of a green jacket and a red beanie cap. His hair is brown with dyed purple strands next to his forehead. He carries a KaibaCorp Duel Disk on his left hand. In the Waking the Dragons arc he has a Chaos Duel Disk.

In the first Toei Animation movie, Ryuzaki has black hair with dyed pink strands and a purple cap.


Yu-Gi-Oh! The Movie

Rex's first anime appearance is in Toei's anime series, where he is seen getting up after losing to Seto Kaiba.

Duelist Kingdom

Rex participates in the Japanese Duel Monsters tournament, where he loses to Weevil Underwood in the finals.

Rex is invited to the Duelist Kingdom tournament. Being a runner-up, in the last tournament, he is one of the few participants given a room on the boat journey. He invites Mai Valentine to his room. Mai challenges him to a Duel, where she'll give him a kiss if he wins, but she'll get the room to herself if she wins. Confident that he won't lose, Rex accepts. However Mai insists that they use her cards. Unbeknownst to Rex, she's sprayed them with different perfumes and is able to tells what cards he draws. With this advantage, Mai wins and boots him out of the room.

During the tournament, he is constantly berated by the fact Mai has more Star Chips than him. He challenges her to a Duel to get revenge, but having already beaten him once, Mai has no interest in facing him again. However since Mai had previously lost to Joey Wheeler and considered it obnoxious to challenge him again, she agreed to duel Rex, if he defeated Joey beforehand, so she would effectively beat Joey, if she was to beat Rex again.

During his Duel with Joey, Rex gambles his "Red-Eyes Black Dragon" card in the hopes of winning Joey's "Time Wizard". This infuriates Mai as it would mean, Rex's Deck would be even stronger if she has to face him. However, Joey wins the Duel and claims Rex's "Red-Eyes Black Dragon".

Battle City

In the Battle City arc, he is seen briefly, losing to Espa Roba, who cheated and had his "Jinzo" crush Rex's "Serpent Night Dragon". Rex then advises Joey on Roba's strength and leaves the tournament afterwards.

Waking the Dragons

In the Waking the Dragons arc, it is revealed that he and Weevil lost a good deal of their popularity after the tournament and they eventually ended up wandering Domino City where they were ambushed by Grerimo. Their souls are taken, and released when Yugi Muto defeated the man.

Rex with the Chaos Duel Disk

The two of them then trail after the party until Yugi's soul is taken by Rafael and they beg him to take them on their plane. Rafael and Alister take them to Dartz, who agrees to give them power if they pass the necessary test. Each of them is given a piece of the Orichalcos Stone and both must succeed in grasping them, which both of them do. They then improve their Decks by taking cards from Dartz's massive collection and Rex challenges Joey to a rematch. Despite using "The Seal of Orichalcos" Rex loses, sending his soul to Dartz again. He is released at the end of the arc when Dartz is defeated. He and Weevil flee from the hospital they found themselves in.

Grand Championship

Their next plan was to enter the KaibaCorp Grand Championship, where they both impersonated a duelist, Fortune Salim. They were quickly defeated by Zigfried von Schroeder and sent back to Japan by KaibaCorp.

Dawn of the Duel

Rex and Weevil's last attempt at revenge was to steal Yugi's Egyptian God Cards from his house, where they mistakenly grab Yugi's bag containing all of his Millennium Items. Yugi tried to stop them but couldn't catch up. While examining their prize, they were then attacked by Dark Bakura, who stole the Millennium Ring back from them.

Ryuzaki is shown in the last episode of Yu-Gi-Oh! dueling with Haga.


Opponent Outcome
Weevil Underwood Lose
Mai Valentine Lose
Joey Wheeler Lose
Espa Roba Lose
Grerimo Lose
Joey Wheeler Lose
Zigfried von Schroeder Lose
Weevil Underwood Not shown

Rex's Deck primarily features Dinosaur and Dragon cards. His cards rely on brute power as opposed to special abilities to win.

Duelist Kingdom Deck
Waking the Dragons Deck
World Championship Tournament 2004 Deck
Facts about Rex RaptorRDF feed
Age 15  +
Birthdate December 29  +
Blood type O  +
Gender Male  +
Height 165 cm (1.65 m, 5.413 ft, 64.961 in)  +
Weight 52 kg (114.64 lb)  +

This article uses material from the "Rex Raptor" article on the Yugioh wiki at Wikia and is licensed under the Creative Commons Attribution-Share Alike License.

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