Invincible star Steven Yeun isn't sure he'd be up for playing Mark Grayson in a live-action adaptation – and he's got a pretty good reason, too.
Based on the comics by Robert Kirkman, who Yeun previously worked with on The Walking Dead, the hugely popular animated series follows 17-year-old Mark, as he's taught how to be a superhero by the most powerful one on the planet, Omni-Man, who just so happens to be his father, Nolan Grayson (J.K. Simmons). Before long, though, Mark realizes that juggling a personal life and saving the world is much harder than it looks...
