Number C10X

"Number C10X", short for "Chaos Over-Hundred Number", is a sub-archetype to both the "Number 10X" and "Number C" archetype, used by the Emperors of Barian World. In anime, they can be very easily summoned (from Graveyard or Extra Deck) via "Rank-Up-Magic The Seventh One", although the actual first support card was "Chaos Mad Feast". The usual tactic is to negate opponent's effects and deal a lot of damage.