The Mountain who is dead, the puffle who was spotted earlier today and the undead army have a combination. The Mountain will be healed (As shown in /jr squidward) and therefore will become not dead. Squidward and Shrek probably have some sort of rivalry, the face next to the graves could be Shrek, dead. Shrek and an army; or perhaps all of us! Squidward is probably planning to make a zombie army. When the Mountain is revived, he will become a zombie, and who knows what chaos he could cause.

The cross might mean shrek was sacrificed, or crucify for our lives

hash what about my theory but the puffle and skull aint the bh? but possibly something else..