The Walking Dead [1] is Robert Kirkman's biggest comic series, but it's not his only one. The talented creator seized an opportunity to sneak in a reference to another one of his book series during The Walking Dead [2]'s midseason finale. To the average viewer, this may have seemed like a throwaway shot, used simply to set the opening scene. Then again, the average viewer would be wrong! In reality, these toys are versions of the characters from Kirkman's Invincible [3] series. From left to right, there's Invincible, Allen the Alien, Atom Eve, and Omni-Man. Fascinating, right?