A twelve-year-old boy from 1977 New York who dies and crosses into Mid-World, where he becomes Roland's companion and, eventually, his adopted son in all but name. Jake first appears in The Gunslinger, is sacrificed by Roland at the chasm, and returns in The Waste Lands via a door in an abandoned house in Brooklyn. Perceptive, brave, and possessed of low-level psychic ability, he bonds deeply with the billy-bumbler Oy. His death in Wolves of the Calla is one of the series' most devastating moments.