In the first Men in Black film, there is a scene where agents K and J go to visit Frank the Pug to ask about the galaxy. As their car pulls up, J says "now that's the worst disguise ever" referring to a man in a locksmith booth selling keys. Frank the Pug replies, "if you don't like it, you can kiss my furry little butt."

Who was the man in the booth? He doesn't have any spoken lines, and he doesn't seem to appear in the credits anywhere. Google doesn't turn up anything obvious. There's only this Q&A post that comes up dry.

Commenters in various forums say the locksmith looks like Riff Raff from the the Rocky Horror Picture Show. But it doesn't quite seem like it's Richard O'Brian, and he isn't credited.

I ask because I can't shake the feeling that he's a famous singer or actor, but I can't place him. In the film there were many famous people who appeared as cameos but didn't get a credit. For instance, Sylvester Stallone, Newt Gingrich, Danny DeVito, George Lucas, Dionne Warwick, Al Roker, and a bunch of others. So this probably wasn't some two-bit random extra.

Any ideas who played the locksmith and if this was indeed a cameo by some famous actor/celebrity?

(I suppose I'll add that most of the cameos were of supposed "aliens" on earth. On the other hand, this fellow was not an alien, and it was a bit of a joke in the film that J arrives on the scene and believes the man to be an alien. It would be something of an in-joke if he weren't famous (where the aliens were all famous -- except the school teacher).)