Continuity mistake: The woman who delivers the blood sample at the beginning of the third scene, changes outfit/character when placed onto the table. (00:08:00)
Continuity mistake: There are missing boys in the movie. At the end of The Maze Runner, there are 8 boys that get out of the maze besides Teresa. At the beginning of Scorch Trials, only 7 get in the compound. When Thomas shows the stolen card to the others, there are 6 of them and they all escape with Teresa and Aris. When they get out the mall and enter the city, there are 5 of them besides Aris and Teresa. The last boy (called 'Jack' by cast and crew) dies in a deleted scene, the other two boys simply vanish without a trace or explanation.
Continuity mistake: When the boys are rescuing Teresa, they go out through a window. The towel they put to avoid the glass comes and goes between shots.
Answer: He is one of the guards that works in the facility.