Rust

Rust was an unofficial element in the Matoran Universe. It could only be created through certain processes.

Description
Put simply, Rust is the outcome of a combination of Iron and the Makuta power of Disintegration. There are few ways to turn a being of Iron into a being of Rust, and most of them have consequences and side-effects, the most notable being susceptibility to disease and accelerated aging.

Examples

 * Using the power of Disintegration (firing beams, disintegration by touch, etc.)
 * Creating iron oxide
 * Absorbing, creating and manipulating rust and rusted metal
 * Creating or neutralizing rust on metal
 * Accelerating, slowing down, or reversing the effect of rust of metal
 * Detecting metals and signs of rust
 * Releasing a Rust Nova Blast (Toa exclusive)
 * Increased endurance naturally came with the element of Iron, and the Disintegration added a natural ability to resist corrosion and armor oxidization.
 * Rust also brought a high resistance to other elements that could theoretically cause rust, mainly Air and Water.

Trivia

 * A being of Rust has no control over normal metal.
 * Galvanizing weapons and armor makes it easier to fight against beings of Rust.
 * There is only one being of Rust in existence, apparently a Toa who works with the Makuta.
 * The mental deterioration resulting in changing from Iron to Rust can often make beings vulnerable to certain mental diseases, especially ones with effects similar to Dementia.
 * The Matoran Prefix "Ox" comes from the word "Oxygen", a key component in the process of rusting.
 * Changing into a being of rust often added shades of brown and orange to their armor, and replacing any burnt orange colors if any.