Zart is the Keeper of the Gardens, and is one of the first Keepers that Thomas works with. He doesn't talk much, and is described as quite big and broody. He always appears at Gatherings, and was the one to lead the banishment of Ben. Sometimes, the other Gladers call him Zart the Fart. In Thomas' Gathering for what to do with him, he supports Thomas for saving Alby and Minho in the Maze, thinking that he should not be punished. On the second day of Griever attacks, he fell victim and didn't make it back. It is possible that he was named after the genius composer, Wolfgang Amadeus Mozart.