La saison 2 de Invincible a été diffusée sur MTV du mardi 27 avril 2004 au mardi 27 avril 2004. Elle comporte 4 épisodes, le premier s'intitule "Eight is Enough Chapter 1 (5)" et le dernier "Eight is Enough Chapter 4 (8)".
Every kid wants superpowers. But not every kid's father is Omni-Man, the greatest superhero the world has ever known. When teenager Mark Grayson finally inherits his dad's abilities, though, he realizes life isn't getting any easier. Juggling homework, dating, a fast food gig and the odd alien invasion or two can be rough. Good thing he's Invincible.
Based on the highly acclaimed comic, Invincible introduces a new viewing experience for fans young and old. Panel by panel, this six-part series transforms the original artwork into a fully realized multimedia adventure.