An eleven-year-old boy with psychic abilities who experiences visions of the conflict between Roland and Walter. He escapes to Mid-World, assists Roland telepathically, and survives the destruction of Walter's machine to become the Gunslinger's apprentice.
Roland becomes Jake's protector throughout the central conflict.
Roland protects Jake after meeting him in Mid-World and later vows to avenge Jake's mother.
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Related entry on Wikidata (Q765498), public domain (CC0).