Sam Witwicky, the human protagonist played by Shia LaBeouf in the 'Transformers' series directed by Michael Bay, had an interesting journey. After three films filled with action, aliens, and Autobots, Sam's character disappeared from the series. His departure was vaguely addressed in 'Transformers: Age of Extinction', explaining Sam's absence by saying that the humans who were associated with the Autobots were either in hiding or had been killed, but his exact fate was never confirmed. The sudden disappearance of this character aroused the curiosity of many viewers.