Zack

Zack is a boy on Steamworks Island.

History
Zack was a nice young boy who enjoyed working on the Mech in a garage. At one point, along with most of the citizens of Steamworks Island, Zack was frozen so that he would survive when the Plant Monsters escaped. He was later found by you during the events of Steamworks Island.

Role In Steamworks Island
You first see him when Sprocket asks you to help him find Zack and projects a hologram of him.When you find him, he is frozen with most of the citizens of Steamworks Island. You free him and destroy the Plant Monster Brains.

You
Zack is very grateful to you for saving him and the rest of the citizens and reuniting him with his best friend Sprocket.

Sprocket
Sprocket is Zack's best friend. Throughout Steamworks Island, Sprocket would constantly pester you about finding Zack, a sign of their close bond.

Trivia

 * The garage where Zack works on the Mech seemingly belongs to a girl named Sully,who looks almost exactly like him.This could mean that Sully may be Zack's sister.
 * Not much is known about him, except that he went missing like all of the townspeople, and is Sprocket's best friend.