Invincible: the ultimate collection

Allen the Alien returns to Earth as directed by the Coalition of Planets -- he's come to gather information from Mark about his father -- the Viltrumite Traitor. Meanwhile, the Viltrumites have come to Earth to check up on Mark's progress as the reluctant Viltrumite Agent of Earth. Also: There are fights.

Mark Grayson is just like most everyone else his age. He's a senior at a normal American high School. He has a crappy part time job after school and on weekends. He likes girls quite a bit... but doesn't quite understand them. He enjoys hanging out with his friends, and sleeping late on Saturdays... at least until the good cartoons come on. The only difference between Mark and everyone else is that his father is the most powerful superhero on the...