CXyz

"CXyz", an abbreviation of "Chaos Xyz" ( Kaosu Ekushīzu), is an archetype of monsters that can be Xyz Summoned by Chaos Xyz Evolution, with the effect of "Rank-Up Magic - Barian's Force", and is a sub-archetype to both the "Chaos" archetype and the "Xyz" archetype. They have been used by Tori Meadows, Fuma, Daisuke Katagiri, Mamoru Jinguji, Chitaro Ariga, Aika Hanazoe and Umimi Habara.

These monsters are created by the Barians for the sole purpose of subduing the "Number" monsters. Xyz Materials attached to "Chaos Xyz" monsters take the form of red diamond shaped crystals as opposed to glowing orbs, and are referred as "Chaos Overlay Units" in the anime. Like monsters that can utilize Chaos Xyz Evolution, these monsters require an additional Xyz Material but with 1 higher Level in a regular Xyz Summon, since they themselves are 1 Rank higher than their respective original counterparts.

So far, all of the "Chaos Xyz" monsters, except "Saimon, the Disciplinary High Priest", can inflict effect damage. Visually, they are all tied together by the presence of glowing red energy on their bodies, energy from the Barian World.

Trivia

 * This archetype is quite similar to "Meklord Emperor" monsters. Just as the "Meklord Emperor" are made to stop Synchro Monsters, "Chaos Xyz" are created to solely restrain "Number" monsters by being able to destroy them by battle despite their unique effect in anime. They both can absorb specific targets to leave their opponents defenseless: "Chaos Xyz" can absorb Xyz Materials from the opponent's "Number", which are all Xyz Monsters, and "Meklord Emperor" can absorb the Synchro Monsters themselves.