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