My last cat was named Lugnut.
I was working in a Chevy dealership on a Saturday. It was only myself and 1 service writer there that day.
I kept hearing a faint noise. When I figured out what it was, it was a very small kitten. It had stowed away on top of the spare tire of a Cadillac Escalade.
It was wet, dirty, weak, and hungry. It was near time to go home anyways so I took it home and fed it and got it cleaned up. And named him Lugnut because he was on the tire
he looked a whole lot like your Trouble. He was one of the best cats I ever had.