St. John Allerdyce was born and raised in Australia. His powers emerged at puberty, but since he could not think of a way to use them for profit, for years he did not use them except in mergencies. Under circumstances that have yet to be revealed, Allerdyce met the mutant called Mystique, who learned of his mutant powers. As a result, Allerdyce joined her and the Brotherhood under the name of Pyro. Pyro is invulnerable to any fire that he has placed under his mental control and has the psionic ability to cause any fire to grow in size and intensity and to take any form he wishes, even that of a living creature. (Such fire creatures, however, have no intelligence or life.) However, he can only control fire, not create it. Therefore he usually carries a flamethrower with him.
