The Steamtron is a that Marcus created to prevent the Lab Rats from releasing their Gear Beast Battle Machines, while he reworked the Eiffel Tower for Douglas' diabolical plans. This Viratron has the ability to convert water to a unique steam that can rust the special alloy the BioBuddies & Gear Beast Battle Machines use to the point & renders them unworkable, as was the case of using it on Nick, Gregory, & Ursula. It is also because of this steam that his body couldn't work in concert with any of the Viratron Upgrades either.