Prior to his first Duel with Yuma, he had already collected eleven "Number" cards<ref name="ep13>{{episode|Yu-Gi-Oh! ZEXAL|13|ref}}</ref> As yet, it is unknown how many "Numbers" he possesses exactly, but after the mentioned Duel he was shown earning three more of them.<ref name="ep18>{{episode|Yu-Gi-Oh! ZEXAL|18|ref}}</ref><ref name="ep31>{{episode|Yu-Gi-Oh! ZEXAL|31|ref}}</ref> Only five four "Numbers" are known by name and it's unknown if he includes all collected "Numbers" in his [[Extra Deck]].