|Voice Actors||Scott Menville|
|First Appearance||The Stolen Smile|
|Last Appearance||Can You Ever Go Home Again, Part 2|
Zack is one of the main characters from the T.V show Where on Earth is Carmen Sandiego?, and was featured in the game Carmen Sandiego: Junior Detective. He can speak multiple languages and has a photographic memory. His older sister, and ACME detective partner, is Ivy.
In the first episode 'The Stolen Smile', Zack is selected by 'the Player' to be Ivy's partner in the pursuit of Carmen. (much to Ivy's chagrin, claiming she can handle Carmen all by herself), and they remain partners throughout the total of the series.