This article or section contains information derived from Co-op Missions, and should not be considered part of the official StarCraft storyline.
The mecha spawning pool was a Mecha Swarm structure created by Stetmann during the End War. It allowed him to produce and upgrade his mecha zerglings, as well as make new mecha zerglings from the recycled remnants of destroyed ones.
The mecha spawning pool is a structure available to Stetmann in Co-op Missions. It functions much the same as a normal spawning pool, with the added bonus at level 9 of allowing Stetmann to respawn defeated zerglings from scrap parts. This ability also grant the structure a rally point.
At level 13, while the talent says it doubles mecha zergling and mecha baneling remnants, it instead lowers the amount of remnant required at the spawning pool from 4 to 2.
Mecha spawning pools do not require creep or egonergy fields to be constructed.
Mecha spawning pools will burn down when put below 1/4th health like terran structures, but can be repaired by mecha drones.