Changes

Usually, "Numbers" are blank cards that take the form of something that whoever finds them desires the most, design themselves to fit their original owner's Decks and keep that form forever. Some Duelists may have more than one "Number" card that fit their Deck. Their card text is written in a strange [[Astral glyphs|alien language]] that only those who wield them can understand (in the dub, all "Numbers" appear normally like other cards seen with the exception of [[Yu-Gi-Oh! ZEXAL - Episode 002|episode 2]], in which "[[Number 39: Utopia (anime)|Number 39: Utopia]]" is blurred). When they are Summoned, their respective numbers are printed on their users, appearing in many places as the forehead, neck, left and right hands (in [[Cameron Clix]]'s case, it appeared under his right eye and in [[Number 56's holder]]'s case, it appeared on his left shoulder).

When Summoned, most "Numbers" initially appear in a "'''neutral form'''" (ニュートラル{{Ruby|体|たい}} ''Nyūtoraru-tai'')<ref>{{cite web |title=ストラクチャーデッキ －オーバーレイ・ユニバース－ |trans-title=Structure Deck: Overlay Universe |url=https://www.yugioh-card.com/japan/products/sd42/ |website=Yu-Gi-Oh! Official Card Game |lang=Japanese |accessdate=30 May 2021}}</ref>, often called a "sealed form" by fans. The "Number" then transforms into the creature depicted in the card's artwork through various means. "Number" monsters use a galaxy-like [[Overlay Network]] portal in contrast to regular Xyz Monsters, who use a red spiral portal.<ref name="ep1" />

Astral stated that there are 99 "Numbers",<ref name="ep2"/><ref name="ep3">{{episode|Yu-Gi-Oh! ZEXAL|3|ref}}</ref><ref name="ep10">{{episode|Yu-Gi-Oh! ZEXAL|10|ref}}</ref> but according to [[Kite Tenjo]] there are 100 "Numbers".<ref name="ep13">{{episode|Yu-Gi-Oh! ZEXAL|13|ref}}</ref> As Astral had successfully retained 1 of the "Numbers", "[[Number 39: Utopia|Utopia]]", it is possible Astral was referring to the ''other'' 99 "Numbers". However, [[Dr. Faker]] believes that, aside from 99 "Numbers" which are Astral's pieces of memory, Astral himself is "the Original Number" (ナンバーズのオリジナル, ''Nanbāzu no Orijinaru'').<ref name="ep31"/><ref name="ep22">{{episode|Yu-Gi-Oh! ZEXAL|22|ref}}</ref> Later Astral corrected himself, stating there are one hundred "Numbers".<ref name="ep82">{{episode|Yu-Gi-Oh! ZEXAL|82|ref}}</ref><ref name="ep83">{{episode|Yu-Gi-Oh! ZEXAL|83|ref}}</ref>

[[File:Astral collecting the memories.png|left|200px|thumb|Astral absorbing memories from the cards]]