"Number C10X" (Ｃ（カオス）Ｎｏ．（ナンバーズ）１０Ｘ Kaosu Nanbāzu Hyaku), read as "Chaos Over-Hundred Number" in the Japanese version and as "Chaos Number Over One Hundred" or "Chaos Number Over a Hundred" in the dub, is a sub-archetype to the "Number C" and "Number 10X" archetypes used by the Seven Barian Emperors of the Barian World as their signature cards. In the anime, the majority of them were first Summoned through Rank-Up by using "Rank-Up-magic Barian's Force" on their corresponding "Number 10X" base form. After Nash and Marin had their memories restored, the Barian Emperors gained the ability to use "Rank-Up-Magic - The Seventh One", allowing them to easily Summon their ace cards directly from the Extra Deck or Graveyard. Most monsters in this archetype have effects that inflict a lot of damage a