I vaguely remember someone like that from ACD who I would see when in there. Doesn't really stand out though. I more remember people who really stand out.
There was an old guy at Rampart who literally lived in the place who I nicknamed earmuffs. He rolled around with earmuffs that you would see someone with at the shooting range. A lot of times he'd have a cooler type bag too. I assume for his lunch. His wife recruited people to come in for cards and he'd run through whatever she got. Those are the kind of characters that stand out. Or the exceptionally weird looking characters one sees.