A powerful telepath, J'onn can both perceive others' thoughts and project his own thoughts. He often acts as a "switchboard" between the minds of his teammates in order to coordinate their actions. The extent of his telepathic abilities is great; several times he has connected his mind to the entire population of Earth, such as in the Trial by Fire story arc,[58] in which he connects to the whole population of Earth in order to find a rogue telepath who has been brainwashing prominent criminals and political figures.