Fan Casting Invincible

Mark Grayson is a seemingly normal teenager whose father Nolan is the most powerful superhero on the planet. Shortly after his seventeenth birthday, Mark begins to develop powers of his own and learns how to wield them with help from his father, who turns out to not be as heroic as he thought, as he hides a dark secret, which starts to slip when he brutally murders the members of the world's greatest superhero team, the Guardians of the Globe.