I remember you bring up this idea some time ago. I am all for Bronze Golem NPC, but against including a Bronze Golem on the actual team (basically, same view as before).
Methinks, from the way it was given to us in TRPG2, the Bronze golem is somewhere between the Stone and a Energy Golem in terms of complexity. For some reason, I get the impression that the mechanics in their complexity are closer to that of an Energy Golem, but the processing unit/brain is significantly simpler and may be just slightly more complicated than that of a Stone Golem. Analysing the situation in the Deeper Downs, it's clear that the Bronze Golems are able to communicate between themselves since when one spots an intruder (the Main), all the nearby golems are alerted to an alien presence and proceed to attack. Thus, I suspect that they're able to issue basic commmands, directives, inclduing an enemy/friend distinction system and location of enemy target at the very least.