recalls seeing two men named Thomas and Dennis pursuing a man named Flagg, who was almost certainly a demon. These are implied to be the same characters from The Eyes of the Dragon. This is the first example of the Dark Tower series crossing over with one of King's other novels. Flagg makes his next full appearance in the series' third installment, The Waste Lands. In the city of Lud, Flagg saves Tick-Tock Man Andrew Quick, an enemy of Roland's ka-tet left for dead in an earlier confrontation. Quick becomes Flagg's devoted servant, and Flagg assumes the name of Richard Fannin. The character returns in the fourth book, Wizard and Glass, as Marten Broadcloak. Also identifying himself as Flagg, he warns Roland and his ka-tet to abandon their quest for the Dark Tower. In flashbacks the reader learns that Flagg as Walter o'Dim was an emissary for John Farson, one of those responsible for the destruction of Roland's home Gilead. The "Argument", a summary of the series thus far, beginning Wolves of the Calla—the fifth novel in the series—notes that Flagg is known as Broadcloak, Fannin and John Farson, depending on the world in which he lives. In Wolves of the Calla, Flagg makes a brief appearance as Walter o'Dim when Father Callahan arrives in Roland's world. Flagg gives Callahan Black Thirteen, a dangerous crystal ball, hoping it will kill Roland on his way to the tower. In this encounter, Flagg is described with "the face of a human weasel", and "the same welling red circle" on his forehead as the Can-toi. His appearance in Song of Susannah is via a flashback revealing that Flagg bargained with the succubus Mia; this resulted in the birth of Mordred Deschain, son of both Roland and the Crimson King. In The Dark Tower, Flagg indicates that he is not John Farson, but served under him until the latter's downfall. Flagg reveals his plans to climb the Dark Tower, see the room at the top and become the god of all. Flagg believes that he can only achieve this by killing Mordred and taking his birthmark-stained foot. Although he tries to befriend Mordred and pledge allegiance to him, Mordred telepathically senses Flagg's true motives and eats him, forcing him to rip out his eyes and tongue first. The Dark Tower reveals more of Flagg's background, relating that he was born Walter Padick in Delain