Ivy Butler is one of the pre-made downtownies in The Sims 2: Nightlife. She can be made playable by befriending and asking her to move in, or by marrying her. Ivy's career is randomized at the start of the game and she is mainly interested in Culture, Travel, and Work. She is often known to pick fights with other Sims, due to her lack of nice points.
Ivy's name is randomized when Downtown is generated. The name "Ivy Butler" is only referenced in the game files. Like most downtownies in The Sims 2, Ivy has a customized face. She uses a slightly customized version of the 1st face template in Create a Sim.