The mecha lair are the evolved form of the mecha hatchery for Egon Stetmann in Co-op Missions. Much like a regular lair, it spawns mecha larva at an enhanced rate to make up for the lack of queens to inject larva. Mecha lairs generate an initial egonergy field, allowing for placements of stetellites around it. At Level 7, mecha lairs increase the amount of stetellites that can be stored as well as decreases the cooldown of stetellites.
Mecha lairs will burn down when put below 1/4th health like terran structures, but can be repaired by mecha drones.