My two virtual nominations are:
Sandy: He seems a cold fish who contributes little to any fun activities and seems to think he's intellectually superior.
Jonny: I know you'll probably all think he's great fun and a 'canny lad', but I happen to think he's a nasty piece of work. I think if he is crossed you will see a different side to him. He likes to be the centre of attention and is playing the game well at the moment but beware those beady cold eyes.