I'd like to add the Mary-Sue's character-warping field. All characters around her are altered. The characters that the author likes suddenly become significantly more awesome/loving/brilliant/generally perfect, if ridiculously dependant on the Mary-Sue. Meanwhile, all characters that the author dislikes randomly becomes bitches/bastards/sluts/abusers/murderers/ugly etc. I swear it is the Mary-Sue's presence that warps these characters so.