Originally posted by Outsider
It was definitely Glenn. They showed the first person camera angles from inside the box with the light holes throughout the show a couple times, so that was from Glenn, Michonne or Daryl. They're not killing Daryl, and Michonne likely wouldn't "take it like a champ" and stay up after one blow, which leaves Glenn, which is obvious because he was killed in the comics, but it's also pivotal in the comics to Maggie's growth. Maybe they lessen the blow here by having her get pregnant and have a kid because she doesn't in the books.
Yass. I watched some video on it and it proves it was Glenn. It's sad to see Glenn go but I'm excited for the next episode to see what happens! Also Negan doesn't kill Woman or Kids apparently.