Zack Sartor is one of the pre-made downtownies in The Sims 2: Nightlife. He can be made playable by befriending and asking him to move in, or by marrying him. Zack's career is randomized at the start of the game, and he is mainly interested in Food, Money, Politics, Paranormal, and Work.
He uses a customized version of the 12th Maxis face template in Create a Sim, except the nose and jaw use the 4th template, while the eyes use the 16th template. Zack's name is randomized when Downtown is generated. The name "Zack Sartor" is only referenced in the game files. He is often known to pick fights with other Sims, due to his lack of nice points.