What was the Smoke Monster in Lost?
Man in Black (Lost)
Following Ajira 316's crash on the Island, the Man in Black appears as Christian Shephard to Sun and Lapidus, informing them of the time travel undergone by the rest of the Oceanic 6. He then takes the form of the deceased Locke, whose body was on the plane, and tricks everyone into thinking Locke was brought back to life.[8][21] Later, Ben tells the Man in Black, who he thinks is Locke, that he must travel to the monster's lair, which lies beneath the temple wall, to be judged for his complicity in his daughter's death. The Man in Black separates from Ben at the Temple and confronts Ben as the monster. After the Man in Black retreats back into a vent, he reappears to Ben as Alex's manifestation, warning Ben to follow "Locke's" every word, to which he complies.[22] The Man in Black (in the form of John Locke), Ben, and Sun Kwon (Yunjin Kim), arrive at one of the Others' camps. The Man in Black then instructs Richard to find a time-traveling Locke, and tell him he must die to bring his friends back to the island. Later, The Man in Black demands Richard take him and the Others to see Jacob, to which Richard reluctantly complies. The next day, he tells Ben of his plan to kill Jacob. Later, Ben informs the Man in Black of Alex's threat, to which the Man in Black replies by telling Ben to kill Jacob. After arriving at Jacob's residence at the four-toed statue, the two enter and meet Jacob. Ben tells Jacob how he has sacrificed and suffered for the island but still had been ignored by Jacob. Ben then proceeds to stab Jacob, whom the Man in Black kicks into a fire.[8][23]