Why he might be dead: "Really dead," "super dead," and "the deadest of deads," are all great ways to describe Glenn's fate. The lovable pizza delivery boy's gruesome death in the comics has been hanging heavy over the show since the beginning, and re-creating it on screen (however awful) would be the perfect way to simultaneously honor the source material and provoke a fierce reaction in viewers. There have been subtle (and not-so-subtle) references to his death in the form of bat imagery (remember that scene in Terminus?) and an entire red herring storyline hinting at his potential demise earlier in season six, and with a baby on the way, his death would be hands down the WORST. He's kneeling to Rick's right side, which would make sense re: blood splatter, and it might be why there's a shot of Maggie's engagement ring in the carnage.