Dinosaur Ryuzaki and Insector Haga's Duel (manga) - Yugipedia - Yu

Dinosaur Ryuzaki and Insector Haga faced each other in the final Duel of the the Japanese National Duel Monsters Championship in the Yu-Gi-Oh! manga.

Weevil Underwood, Yu-Gi-Oh! Wiki

Insector Haga

Roses are Red~ — Every moment of screentime Haga and Ryuzaki/Rex

Dinosaur Ryuzaki (Rex Raptor) - Yu-Gi-Oh! Duel Monsters - Zerochan Anime Image Board

Dark Yugi and the Rare Hunter's Duel (manga), Yu-Gi-Oh! Wiki

Katsuya Jonouchi and Dinosaur Ryuzaki's Duel (manga), Yu-Gi-Oh! Wiki

Dark Yugi (manga) - Yugipedia - Yu-Gi-Oh! wiki

Dinosaur Ryuzaki (Rex Raptor) - Yu-Gi-Oh! Duel Monsters - Zerochan Anime Image Board

Katsuya Jonouchi Enemies - Comic Vine

Dinosaur Ryuzaki - Duel Links