Brother Zachariah was a Silent Brother, a feared and respected figure in the Shadow World. He was the most frequently called upon Silent Brother in London until the 1900s, and in New York in 2007 after the death of Brother Jeremiah. Zachariah was the name used by Jem Carstairs during his time among the Silent Brothers. Because of the circumstances leading to his transformation and subsequent joining of the Brotherhood, Brother Zachariah maintained more of his humanity than his fellow Brothers. As of 2008, he has been cured of his illness and has left the Brotherhood.