Minho's tattoo
In the book The Scorch Trials, each Glader was secretly tattooed on the back of their necks with information clearly identifying them as WICKED test subjects. The tattoos were a variable to see how each individual reacted to the role they were given. Each tattoo began with "PROPERTY OF WICKED" and included each subject's group (A or B), their subject number, and in some cases their title. The title was given by WICKED based on their character, personality and illustrated the role WICKED intended for them to play. For example, Newt's title was "The Glue", meaning that Newt's personality as the level-headed centre of Group A was the glue that kept the group together; it also referenced the fact that he was the control subject of Group A. As for Thomas's title, "To be killed by Group B", it was intended to foreshadow WICKED's designs. Minho's tattoo was The Leader and as such, he led them all on The Scorch Trials.
- Thomas: "To be killed by Group B" A 2
- Teresa Agnes: "The Betrayer" A 1
- Newt: "The Glue" A 5
- Minho: "The Leader" A 7
- Frypan: A 3
- Chuck: A 4
- Aris Jones: "The Partner" B 1
However, in the films, they're supposedly replaced by the Tracking tags in the backs of the Gladers' necks. These trackers help WICKED to locate the Gladers. We first encounter a tracker when a WICKED soldier scans the back of a girl's neck in the start of The Scorch Trials (when WICKED and Janson arrive at the scene when the Gladers attempt to rescue Minho). When first meeting the Gladers in The Scorch Trials, Jorge uses a device to scan these trackers on their necks. The first person he identifies is Thomas. Jorge then goes on to point out that they came from WICKED and that they were 'Very, very valuable'. This leads to them being hung upside down in Jorge's group's hideout. We later see the trackers when, in The Death cure, when Teresa removes the trackers from the Gladers' necks. This happens after they reunite with Teresa inside the city. Teresa says that, if they wanted to sneak into the WICKED complex, they'd need to remove the trackers. This is what leads to Teresa being asked to remove the trackrs from all the Gladers' necks. Gally quotes 'She enjoyed that' as he presses cloth on the open wound where Teresa took out his tracker. This is the last that we see of them in the movies.
