Protosteel

"Lewa yanked on the chains. They were made of protosteel, one of the hardest substaces in the universe, and so thick that even Pohatu would have a hard time breaking free by sheer strength alone."
— Narrator, Shadows in the Sky

Protosteel
Lewa Nuva's protosteel Air Saber
Substance
Function	Numerous
Known states	Solid
Primary location	Matoran Universe
Pronunciation	Pro-toe-steel

Protosteel is the toughest known substance in the Matoran Universe, a rare type of Metallic Protodermis.

History

Like all other forms of Protodermis, Protosteel was made by the Great Beings. Toa of Iron have the ability to create and control the substance, along with all other metal.

Protosteel has been used rarely, due to the difficulty in creating and working with it. Artakha is one of the few known to be able to work with the substance and create things out of it. It was also used in the Order of Mata Nui's experiments with the members of Ehlek's species.

Makuta eventually evolved from solid Antidermis into gaseous Antidermis encased inside Protosteel armor. They later hired the Nynrah Ghosts to alter their armor to take advantage of the Makuta's new form.

Artakha later gave the Toa Nuva Adaptive Armor and Toa Tools made of Protosteel to help them in their mission in the core of the universe.

Properties

Protosteel is the toughest known form of metal and the hardest known substance in existence in the Matoran Universe, even stronger than Exsidian, and is conductive to electricity. It can also melt. It is difficult to create, extremely hard to work with, and only a few beings within the universe can deal with it, including the Nynrah Ghosts and Artakha. While the Vortixx know how to work with it, they do not have access to Protosteel and are trying to learn how to create it.

Due to its durability, few known entities are capable of destroying or damaging Protosteel including:

• Another Protosteel object
• A type of armor-eating virus
• Sufficiently corrosive acid, such as from a Lehvak or a Keelerak's Rhotuka
• Guurahk's corrosion energy
• Tren Krom's and the Shadowed One's disintegration eyebeams
• Pridak's teeth (formerly)
• The heavy doorway between Mangaia and Metru Nui's dome
• Intense heat or plasma
• Powerful lasers
• A Toa of Iron or Magnetism using his control over metal to destroy it
• A Kanohi Jutlin
• Vengeance's Rhotuka spinner

Known Protosteel Objects

• Codrex Vehicles
  • Rockoh T3
  • Jetrax T6
  • Axalara T9
• Order of Mata Nui weapons
  • Giant Axe
  • Rotating Blades
  • Trinuma's kinetic blaster and shield
  • Jerbraz's sword
  • A dagger carried by Tobduk
• Brotherhood of Makuta weapons, armor, and Kanohi
  • The armor of all Makuta
  • Longswords (destroyed)
  • Hook Blades (destroyed)
  • Antroz's Jutlin (destroyed)
  • Chirox's Shelek (destroyed)
  • Mutran's Shelek (destroyed)
  • Vamprah's Avsa (destroyed)
  • Krika's Crast (destroyed)
  • Gorast's Felnas (destroyed)
  • Bitil's Mohtrek (destroyed)
  • The Kraahkan (destroyed)
  • Miserix's Mask of Mutation
  • Icarax's Mask of Scavenging (destroyed)
• Adaptive Weapons/Adaptive Armor/Adaptive Kanohi Nuva
  • Air Saber
  • Blizzard Blade
  • Twin Propellers
  • Rotating Fire Blades
    • Fire Sword
  • Multi-Resistant Shield
  • Midak Skyblaster
  • Nynrah Ghost Blaster
  • Adaptive Hau Nuva
  • Adaptive Kaukau Nuva
  • Adaptive Miru Nuva
  • Adaptive Kakama Nuva
  • Adaptive Akaku Nuva
  • Adaptive Pakari Nuva
• Toa Tools
  • Protosteel Talons
  • Razor-Edged Protosteel Shield
  • Helryx's mace and shield
• Miscellaneous weapons
  • A long, thin blade used by Takadox
  • Lariska's daggers
  • Ehlek's species' Tri-Talons
  • A Protosteel axe wielded by Pohatu (Toa Empire Alternate Universe)