Rex Raptor's Decks

Duelist Kingdom
During Duelist Kingdom, Rex's Deck contains an assortment of Dinosaur-Type monsters, his most powerful cards being the Dragon-Type "Serpent Night Dragon" and "Red-Eyes B. Dragon". His style of dueling is simple, relying on the brute power of his Dinosaurs augmented by the Dueling field to strengthen them.

Battle City
Although Rex wasn't seen dueling, he was shown losing to Espa Roba, losing his ante of "Serpent Night Dragon.

Waking the Dragons
In Waking the Dragons, Rex uses a Dinosaur Deck heavily focused on swarm tactics. In addition, he utilizes the "Seal of Orichalcos" to turn normally weak monsters into powerful beatsticks. In an echoing of his earlier Deck, Rex's strongest monster is not a Dinosaur, but the Dragon-type "Tyrant Dragon".