The Goddess Who Must Not Be Named. She is constantly opposed to Fate, and she is just as difficult to understand, although where he is implacable — she is capricious. Since everyone believes in her, she does not need to be worshipped, and would regard such a thing as taking her for granted. Her favour instantly disappears if she believes someone is relying on her, or calls her by name. The only temple ever built in her honor, by some members of the Guild of Gamblers, was struck down by a series of unfortunate events.

When playing games with mortals, The Lady never sacrifices a pawn, and doesn't play to win, but rather plays not to lose. Rincewind, who refuses to believe his continued survival against the odds is anything other than coincidence, is one of her favorites.

Her appearance is hard to determine. After witnessing her in person, Rincewind and Twoflower were not able to agree upon what she had looked like, other than that she "appeared to be beautiful" and had green eyes. Her eyes are her defining feature: no Discworld God can change the nature of their own eyes, and hers are pure green, without iris or pupil.