Dan

Dan is a Glader and Builder whose name was seen engraved on the wall of the Glade in the Maze Runner film. His name was not crossed out at the time, and therefore was alive when Thomas arrived. He had long blond hair and wore a blue shirt. He was good friends with Gally and was often seen with him. He was a Runner, but after Alby was stung, he and Hank became a Builder. He and Hank stayed loyal to Gally and stayed in the Box with him during the Griever attack. Dan was the one who grabbed Teresa and dragged her over to the post to be an offering to the Grievers. Dan and eight others decided to stay in the Glade with Gally.
 * 1) In Maze Runner: The Death Cure, Dan is seen in the back in the safe haven