"MXyz" an abbreviation of "Metal Xyz", abbreviated "MX" Metaru Ekushīzu), is an Archetype of monsters that can be Xyz Summoned by Chaos Xyz Evolution, with the effect of "Rank-Up-Magic Alloy Forge", and is closely tied to the "Forge" archetype. They have been primarily used by Wayland Smith in his Deck. These monsters are created through the elemental power of EARTH to improve Xyz Monsters.
Xyz Materials attached to "MXyz" monsters resemble molten plates of metal, and are called "Ingot Xyz Materials". Like monsters that can utilize Chaos Xyz Evolution, these monsters require an additional Xyz Material but with 2 higher Levels in a regular Xyz Summon, since they themselves are 2 Ranks higher than their respective original counterparts.
"MXyz" monsters are shown as being in front of a hot forge, inside of some sort of factory, or outside of a factory or a castle. Furthermore, all "MXyz" monsters are metallic and mechanical in nature. In juxtaposition to the "CXyzs'" glowing red lines, "MXyz" monsters have glowing lines of molten metal across their body.
Due to their connection to the "Forge" archetype, "MXyzs" have effects that greatly increase their own raw power, or can utilize themselves to help other monsters, displaying Wayland's motivation to build gear for the right occasion. Because of this, "MXyzs" form a perfect counter against the s and their "CXyzs".