Should have mentioned, the two names people have been calling him are "Mr. Gray", and "Fluff Daddy". I've never been so sure there are no rats in a place before - this cat is a baller.
Not my cat - this is the feral cat that lives in the parking structure where I work. I got a good picture of him this morning and made him my desktop image. We've been calling him by a couple of names but thought I'd open it up to the group. What have you got? View attachment 871984
I was scrolling through to see if anyone suggested Smokey. My son and daughter brought home kittens from a friend's house. He's long gone but your guy looks just like him. The other kitten was Bandit.