Mark Grayson is just like everyone else his age, except that his father is the most powerful super-hero on the planet. And now he's begun to inherit his father's powers. It all sounds okay at first, but how do you follow in your father's footsteps when you know you will never live up to his standards? Now the Guardians of the Globe are dead. The super-hero community is abuzz with the who, what, when, where, why, and how. Unbeknownst to him, Invincible is at the center of the most dramatic event to hit the super-hero community in decades.Kirkman, Robert is the author of 'Invincible 4 Head Of The Class', published 2004 under ISBN 9781582403915 and ISBN 1582403910.