>>892246Other than the machine, training, safety equipment as appropriate and hands?
Comfortable shoes for standing/walking, probably steel-toe.
Possibly some kind of hex wrench or custom tool for adjusting stops/guides but that would be machine and workplace dependent, probably workplace supplied as well. Probably not going to need to adjust anything unless you are doing a lot of different small run jobs or the machine requires some kind of laborious cleaning process that entails disassembling the place where you interact with the machine.
>>892352A press brake machine operator operates a press brake machine. A press brake machine is a usually a large, heavy, powerful device (seen in front of that guy) that performs the simple action of pressing a shaped tool down into another shaped tool. For example, they are great at making precise bends in sheet metal. The flat plates at his elbow are being formed into the box or support farther back by holding the material in place (probably against a pre-set stop) and letting the brake come down to crimp in a bend when it captures the metal between the V-shaped tools. This is a very old-fashioned metalworking technique that is still in wide use today for lots of reasons.