The Generator is an iconic part of Gauntlet. Generators may change graphically from one monster to the next, but all serve the same purpose; they continually populate the battlefield with monsters. To proceed with any speed in Gauntlet, the Generators must be destroyed, else they continue to spawn more enemies, infinitely. Generators can be destroyed by conventional means; shot, fought, or bombed.
Generators, like most monsters, possess three levels of strength. Generators will spawn monsters of the same level as the generator; damaging the generator will reduce its strength and disable the ability to churn out monsters of that level. Damaging the Generator below the basic level will destroy it.
Generators now appear both on the ground and also attached to walls. There are a few rare generators, looking like Teleport Tiles with blue portals, that cannot be destroyed. These generators usually produce high-level Grunts. Another variant is like the above, but with red portals; these will spew out random monsters from any of the Realms. Also, some generators have the ability to rebuild themselves given enough time.
Generators no longer rebuild themselves.
There are at least two designs of generators. The one that summons inhuman creatures resemble small menhirs, whilst the ones that spawn human enemies resemble small pyramids.