Sheemie, introduced in Wizard and Glass, was a mildly mentally retarded tavern boy at a saloon in Hambry. Sheemie assisted Roland and his first ka-tet in preventing the followers of John Farson, and more specifically, the Crimson King, from reviving the Great Old Ones' war machines, later following the group back to Gilead. Sheemie joined Roland's ka-tet briefly and helped the gunslingers ward off the Crimson King's followers until he and his mule Capi mysteriously disappeared. However, while Roland assumes Sheemie is dead, he is not; he had been captured by the low men and taken to the Devar-Toi, the Breaker prison, because of his telepathic abilities, which remained unknown to Roland's ka-tet. He reappears in the series' final novel and assists the new ka-tet in defeating the low men and the taheen. However, during the battle, he steps on a piece of glass, causing an infection (accelerated by the "poison air" around Thunderclap). While escorting Susannah to Fedic on the train, he dies of blood poisoning. Ironically, though Susannah never learns this, she is indirectly responsible for his death, as it is her bullet that breaks the glass out of his window, causing it to be there for him to step on.