The Curmudgeon (aka Archie Bunker)
With The Curmudgeon, everything you negotiate sucks. No matter what you arrive at is horrible, and every step along the way during the negotiation will feel like a dentist tugging on a tight molar at the back of your mouth.
Unlike The Bully, The Curmudgeon won't yell; and unlike The Nice Guy, they will never be happy. While it'll seem like they don't care too much about the details, they are just never happy with any position you are taking. The Curmudgeon is also not The Wimp. They've been around the block before and will remind you of that every chance they get. In a lot of ways, The Curmudgeon is like a cranky grandparent. If you are patient, upbeat, and tolerant, you'll eventually get what you want, but you'll never really please them because everyone (and everything) pisses them off.