Gally

"You see what he is trying to do, right? First he breaks our rules and then he tries to convince us to abandon them totally. The rules are the only thing that have ever held us together. Why now are we questioning that? If Alby was here, you know he'd agree with me. This shank needs to be punished."

- Gally

Gally is the main antagonist of The Maze Runner and the anti-hero/supporting protagonist of Maze Runner: The Death Cure. He is a Glader who did not trust Thomas, thus he becomes his enemy, except in Maze Runner: The Death Cure where he becomes his ally.

He was portrayed by Will Poulter in his first heroic role.

The Maze Runner
Gally arrived at the middle of the Glade three years before Thomas came, and became the second-in-command of the Gladers.

Three years later, since Thomas arrived, Gally engages him as a runner.

After the Grievers attack some Gladers and partially destroy the Glade, Gally puts the blame on Thomas.

Later, he has Thomas and Teresa Agnes imprisoned. While Gally has Teresa tied and attempting to do so on Thomas, Thomas wakes up and reasons him and the other Gladers about the Glade and WCKD. Gally gave a second chance on Thomas, Teresa, Minho, Frypan, Chuck, Winston, Newt, Clint, Jeff and some others to escape while he decided to stay along with another half of the Gladers instead.

Gally has been stung by a Griever and aims a gun at Thomas. but Minho throws a spear into Gally's heart, killing him. while Gally shoots a bullet into Chuck's heart, killing him.

Maze Runner: The Death Cure
It is revealed that Gally survived. He teams up with Thomas, Newt and Aris Jones, and the quartet infiltrates the WCKD headquarters, and managed to crumble WCKD for good.