Yes, he was manufacturing Mechanical Supermen. After the Parallel Universe disaster, Mechanical Trigon had seized the entire production line, so he could now produce Mechanical Supermen at a respectable pace.
Where did the materials come from?
Some had been supplied by Darkseid, who had collected vast quantities of materials back then. The rest came from the Parallel Universe.
Mechanical Trigon had turned the Trigon of the Parallel Universe into his avatar. That Trigon plundered materials throughout the universe and sent them over.
Thus, although Hell was barren, Steel City had no shortage of materials. Its factories ran twenty-four hours a day, churning out units at a frantic pace.
The Mechanical Supermen who had besieged the Ice Queen last time were not all the Mechanical Supermen in Steel City. Mechanical Trigon had inherited Andrew's proud tradition of keeping a low profile and had not deployed them all.
"He's mass-producing troops like this, and you're telling me Trigon loves peace?"
Batman's heart sank. Trigon was clearly preparing to make a major move.
This time, he had learned from his previous mistake. Rather than fighting alone, he would overwhelm his enemies with an army. Given Steel City's current forces, Earth would have no hope of resisting if Trigon truly had hostile intentions.
Batman immediately wanted to return to Earth and warn everyone about Trigon. Then a question suddenly occurred to him: how was he supposed to get back?
"Shouldn't they have given me a communications device? Why don't I have anything?"
Batman felt he had been duped. With no other choice, he continued his tour, and the more he saw, the heavier his heart grew.
Eventually, Batman arrived at Mechanical Trigon's palace, where he found the now human-sized Mechanical Trigon holding a controller and playing Super Mario.
A shapely black woman sat beside