Robert Kirkman Seemingly Kills Dreams Of an Invincible/Spider-Man Team-Up

There are a lot of superheroes in Prime Video's adaptation of Invincible. Within the show's first season (and half of its second), Mark Grayson has brushed shoulders with Robert Kirkman, Ryan Ottley and Cory Walker's spins on classic heroes like Superman and Batman. Depending on who you ask, though, he might be...