Carl is a Glader and Builder whose name can be seen engraved on the wall of the Glade in the Maze Runner film. His name was not crossed out at the time and therefore he was alive when Thomas arrived. His name remained untouched on the wall after the Griever attack, implying he survived and stayed in the Glade with Gally and 14 other Gladers when the others made their escape. Like the other Gladers, Carl was picked up by WCKD as seen in the Death Cure film. He was most likely named after Carl Sagan.