"Number C", short for "Chaos Number" (Ｃ（カオス）Ｎｏ．（ナンバーズ） Kaosu Nanbāzu), is a sub-archetype to both the "C", "Chaos" and "Number" archetypes. They are evolved forms of the base "Number", which are Summoned by overlaying their base counterpart through Chaos Xyz Evolution. They are used by Yuma Tsukumo, Reginald Kastle/Nash, Mizar, Girag, Alito, Vector, Number 96, Quattro, Rio Kastle/Marin, Dumon, Trey, Quinton and Don Thousand in the Yu-Gi-Oh! ZEXAL anime and Yu-Gi-Oh! D Team ZEXAL manga. They are supported by the "Rank-Up-Magic" archetype and "Chaos Field".