In Invincible Season 3 Episode 4, Mark finally confronts Cecil about the orb that has been spying on him for a while now.

As a result, he isn't considered a threat by Omni-Man and doesn't get the call, though he later rejoins the group to help guide the new members who replace the Guardians killed by Nolan.

Robert Kirkman feared Invincible might become "the Omni-Man show." But Season 2 and 3 proved it’s much more — epic and here ...