While investigating strange disappearances outside Chicago, Michael Shannon was attacked and left for dead. He awoke with vague memories of a strange robed man and discovered that he now had amazing mental powers. Michael joined the SuperSquad America as Brainstorm and served the team for just over two years, before disappearing in 1975.
In truth, Michael had followed a strange calling to
the temple of the White Shield in Tibet. There, he learned that the
robed man robes from his memories had invested him with the soul of
Sharnak, the ancient mystic mentalist who founded the Order of the
White Shield and that he was to play a role in coming mystical
events. Adopting the name White Shield, he led the order in battle
against the Cult of the Black Sword and in 2000, used the remainder
of his life force to send the new SuperSquad America to the
final battle for control
of the Seventh Cycle.