Nikki is the girl who draws the winning lottery numbers for the Griffins in "Lottery Fever". Nikki is none too bright as Tom Tucker refers to her as a "A checkout girl in a cheap dress who wants to be a model". During the drawing, she constantly makes mistakes on naming the numbers until the last one, but continues to draw after the lottery is complete. Tom orders her to go wait in the car and says he is taking her out to "Walt's Roast Beef".
Nikki is voiced by Alexandra Breckenridge.