The Sentience took the form of a mass of energy. It was able to send out column of energy from its central mass under Crook Marsham, which could change shape in order for it to feed. The Sentience fed on energy, including those of humans. It couldn't feed on humans directly and instead needed to latch on to strong memories, such as regrets and desires. The Sentience would then create individuals from the memories and try to interact with the target. The stronger the belief in the memories was, the more powerful the copy was and the easier the Sentience could feed. After coming into contact with the target, the Sentience would feed on all the energy of the human, leaving a desiccated corpse that would disintegrate with a touch.