More info: Their proc has hit me max for about 80dmg, it can be a real killer when you try to get away and they cold proc you, because on top of the dmg, it also slows you down for about 5 seconds. At 23 I get 420000 from OJ's and 450000 from reds. Watch out for the red mists near the water, they can be easy to miss if your going for the skellies.
Have a cold proc when they hit you. Easily solo-able on my 23 shammy, I've even killed a red one here or there, with some difficulty. Gotten two drops so far: