Within the grand tapestry of Stephen Kings Dark Tower series, there are many prolific and memorable characters that make the series so remarkable. Of course, there is Roland Deschain, the protagonist of the series and the last surviving member of the fabled gunslingers. Then there's the Man in Black, aka Randall Flagg, and his master, The Crimson King. When it comes to the possible first season of Mike Flanagans adaption of The Dark Tower, there is one character that is more vital to the story than most others, and needs to be included in the show. That character is Jake Chambers.