At one time I had to give various friends and work colleagues the folowing titles to keep them sorted out.
Big Dave, Viking Dave, El Davo, Sad Dave, Boring Dave, Small Dave, Bike Dave, Beardy-Dave. There were also three Daves who are/were identified by their surnames.
Oh, and Handjob Dave, who broke his arm punching a door.
Most of these Daves would answer to those titles. Including the last, who was really proud of his 
And then there was
LBSOP (Long Blonde Streak Of…) really tall, thin guy who made a noteable first impression, who made a significant journey to our local monthly club meetings and whose name we eventually learned was… Dave.
I think there’s some sort of Dave epidemic.
Daves aside, The job I was doing was security and CCTV work on some local low-rent apartment blocks. Names abounded for residents and local authority employees alike. We used to pass the time holding ugly bastard competitions, giving residents and visitors ratings out of 10.
Yes, it was a crap job and we generally hated our “clients.”
Aside from the downright crude, I particularly remember:
Mr.-Staypuft-with-a-bubble-perm
I don’t think the camera liked the poor girl.
The Stepford kids - again, partly due to the way the camera made them appear.
The invisible boy - too short to appear on the door mounted camera.
Miss WHY??? - a pretty, well dressed woman who worked in a bank. we could never work out what had led her to live here.
Genius the Boy Wonder - the youngest member of a large irish family (about 15-16) who would pull the exterior door’s handle repeatedly with some force for hours on end until the door lock was either released by someone leaving, or a member of the security team who was aware that he lived there, As he didn’t often stand in front of the door camera, this latter case didn’t happen often. If left to do this for more than 10 minutes, he would sometimes tap on the office window.
Mr. Twitcher - a local authority employee with a facial tic that just kept going, and going…
Is it a bird, is it a plane? no, it’s… Jumperman - a guy who was an outpatient who was known to have a tendency to threaten suicide or goad people into beating him up. in their wisdom, the council housed him on the 10th floor. After a four-hour “cry for help,” on (or rather, mostly off) his balcony he was relocated to a bungalow.
Craterface - acne had been unkind. The camera emphasised it.
Tramp man - whilst many of the residents could have passed for homeless - indeed one or two did so for spare change - Tramp man was one of the residents who actually had a job of sorts. Not that you could have guessed.
Film star one and Filmstar 2 - two residents whose names were the same as great film actors. Both residents were deemed medalists in the Ugly olympics by the staff. Before I knew his name i temporarily christened Filmstar one Scooby-Doo-Villain-bloke
and then there was Happy The Paperboy.
Happy was/is a bit of a well known figure in town. he stood in the town centre selling the local paper for a while, and then got about five or six routes for the local free paper. One of my freinds christened him Monk-Man because he was about 60, portly, florid, and would have made a good casting choice for any alcoholic mediaeval abbot.
However, I came to call him Happy because the guy was another who would/could never use the door buzzers. he’d just press buttons at random until he got in. this usually took him quite a while, at which point he would come and shout at us for not letting him in.
And yes, -not- letting people in was more crucial than otherwise.