Mecha ravagers are temporary spawned units of Stetmann in Co-op Missions, created by mecha infestors. They are created once the BONUS Ravager upgrade is researched. They have the Environmentally Unfriendly Eruption ability, which allows them to hit ground and air units in a small area, similar to the Corrosive Bile ability of the regular ravagers. This ability is autocast.
Buries the unit underground. Burrowed unit are unable to move or attack, but they cannot be seen without detection.