My candidate is a chap named Julian who was at my uni, though not in my course.
Basically, the guy was insanely loaded thanks to his parents and even had his own private appartment down the beach (the student equivalent of a deluxe mansion), on top of having an expensive bmw car and a credit card with seemingly unlimited funds.
As rich as he was, he was the stingiest person I ever knew, rude to those he viewed as "lesser" people (i.e: servants, waiters, barmen....) and liked to rant about how tough he is (would often rant that he "almost" went to prison and can't get involved in fights or hassles because he had previous police trouble). Worthy of note is that he was VERY popular with the ladies, he would hit the bars and end up chatting girls about his house and car, and would almost always end up with someone to take home.
Highlights of my interactions with him:
-There was a beach party and me and my friends walked there. Twas only a 5 min walk.
Despite living right next to the friggin place, Julian passes by in his car, stops next to us and says laughing "ha! you guys are walking", then drives off. Never mind that I LIKE walking and it wasn't even that long of a walk ¬¬
-One night we ended up at Julian's place, I had bought a big box of beer, night went fine, we all went home in good spirits and I left the beer behind as I couldn't be bothered to carry the box back. Next day I ask Julian if he can bring the beer along for next night out, he feigns incredulity "what beer? you never left anything at my house, obviously you don't remember that we drank it all". Ahuh, I let it slide as I ain't the type who likes to make a big deal out of seemingly small things.
-His equivalent of asking people to politely stand aside so he can pass is "get the f*** out of my way" and "move!"
-Never saw him tip anyone ever, even when he had one of his prospective lady friends around. To his credit, him being rude to the waiters and telling them off for not serving him first never seem to daze the ladies, if anything they seemed to find him more manly -^
Now to make it clear, he wasn't my friend, he was just kinda in my extended circle so would see him from time to time. I'm a chilled guy who likes to think he mixes with a lot of different people, my way of expressing a dislike for someone is to simply avoid them when possible. On that note, an awesome moment where I kinda got my own back ^^
Julian's "best" friend was a new employee at the local bar. I've been taught it is good manners to tip when possible and never had that lesson proved so fruitful, to julian's friend I would tip 20p per drink, 50p in some cases.
Julian walked in right after I ordered my drink, strutted to the bar and demanded a drink from his friend. His friend nodded, then served me first before moving on to him.
Julian was dumbfounded, his expression was pure shock, "you served HIM before me????", his voice almost trembling. His friend replied chippily "I have to! The guy gives me good tips!".
Walked away with a big smile on my face

Thank god I didn't see the guy too often after that year.