Invincible

Robert Kirkman's Invincible follows Mark Grayson, a teenager whose father Nolan, known as Omni-Man, is the most powerful superhero on Earth. When Mark's own powers arrive he becomes Invincible, only to learn that his father belongs to the Viltrumites, a warrior race that conquers worlds, and that Nolan was sent to prepare Earth for takeover. Over 145 issues (#0-144, Image Comics, 2003-2018), drawn mainly by Cory Walker and Ryan Ottley, the series grows from a light-hearted coming-of-age superhero book into a sprawling, often brutal space epic about family, responsibility and what it means to be a hero, with real consequences, aging characters and an ending that closes the story for good.