The Terrifying Three
Some semi-sophisticated technical gear is present in their warehouse-based (assumed) headquarters. Of the trio, Cutlass may have the know-how to at least operate it effectively, but it seems a stretch to think she built it. They probably acquired the equipment from outside sources, either stolen or provided. The most highly likely providers would include the criminally inclined broker, Donnelly Ferguson. Another likely participant is Dr. Norton Ganss, the equally criminal scientist responsible for endowing Carl Donewicz with the powers that made him Steeljack.