The two "Numeron" Spell Cards that Yuma uses focus on Xyz Evolution, being used to Summon "Number C39: Utopia Ray Victory" and "Number 39: Utopia Roots". He also has "Number 100: Numeron Dragon", after obtaining it from Mizar.
The cards that Don Thousand uses mainly revolve around activating during the opponent's turn from the hand or even the Deck, and are described as holding the power of the Numeron Code, being able to "rewrite" the opponent's cards and increase their own ATK to extremely high levels.
The "Numeronius" archetype can be considered an upgrade to this archetype, containing related monsters with even higher ATK and stronger effects.
Cards based on members of this archetype were used in Boss Duel, a special type of Duel performed in Japan during a Yu-Gi-Oh! Day event:
This deck main strategy involves using "Numeron Calling" to summon up to 4 "Numeron Gate" Xyz Monsters. "Numeron Network" can copy "Numeron Calling"'s effect. All "Numeron Gate" monsters are Rank 1 LIGHT Machine monsters, so they can be used to summon "Number S0: Utopic ZEXAL" and shut your opponent down. "Memories of Hope" can be used to draw up to 4 cards after activating "Numeron Calling" giving you massive hand advantage.