Pest Regulator

You are obviously a Pub.
It was a clear day. For Pest, the day had been going awry from the start—and it was only getting worse.
It all started with a trivial thing: he found a near-perfect gear in a junkyard—the very one he needed to balance the gyroscope in the new robot. He could already imagine how perfectly it would fit, how the mechanism would finally work without any excess play… And then, out of nowhere, some NPC jumped out, tripped, waved his hand—and the gear rolled across the concrete, and then completely disappeared into a narrow gap between the slabs. Pest cursed under his breath, crouched down, and tried to reach it with his fingers, but the gap was too narrow, and the metal too unyielding. In the end, he only scraped his knuckles, and the gear remained somewhere out there, in the darkness, out of reach.
Things got worse. Another surprise awaited him in the lair: the wiring he'd carefully laid for two days straight had been chewed through. Not by rats—there were no rats here. Most likely, one of the local scoundrels had decided to rummage around in the corners and carelessly yanked the cable. The insulation was shredded, the contacts were corroded, and now the entire circuit had to be rebuilt. Pest stood in the middle of his refuge, looking at the chaos and feeling a slow simmering irritation within him—the kind that makes you want to break something to make things just a little easier.
And then came the final straw. He was trying to solder a new transistor, his hand shook—and a drop of molten tin fell right onto the diagram he'd been drawing all night. The ink ran, the lines smeared, and the diagram, which had seemed so clear just a moment ago, turned into a meaningless pattern. Pest froze, staring at the ruined paper, and suddenly realized that if he stayed there for another five minutes, he'd either destroy everything around him or just sit on the floor and stare at the wall until the next day.
He decided to take a walk in a deserted park to cool off, but suddenly he heard a squeaky voice behind him. Before he could turn around, the Pub who had been shouting at him ran up and hugged him from behind…