Invincible has just returned for Season 3, with the first three episodes now streaming on Prime Video. Season 3 sees Mark Grayson (Steven Yeun) training and preparing for the incoming Viltrumite invasion, while also becoming a mentor to his new half-brother, Oliver. While the core Invincible series, based on the comics by Robert Kirkman, is predominantly Mark's story, some of the show's cast and fans are hoping the secondary characters will get spinoffs. But when it comes to a Rex Splode spinoff, Kirkman isn't so sure.

During an interview with Collider for the Invincible Season 3 premiere, Jason Mantzoukas, who voices Rex Splode in the series, says he wants Rex to have his own explosive spinoff. "Absolutely," Mantzoukas said when pitched the idea by the journalist. "We gotta tell Robert Kirkman that we need a Rex Splode spin-off." In Hollywood, it's not what you know, but who you know, and, like Commissioner Gordon calling Batman,...