Robert Reynolds projects an entity as a dark side effect of his powers. It has been claimed that for every benevolent act the Sentry performs, the Void corresponds with attempting an act of malevolence. He was formerly unaware that the Void was a false personality, but has since been informed otherwise. In the 2009 storyline "Utopia", it was temporarily separated from his being, with a "shard" of its essence placed within Emma Frost which is later transferred to Scott Summers and currently resides locked away in his mind.