- The Tree of Entry. It is a demonic tree with a skull like face carved into it. It emits a piercing shriek that can summon zombies to it in order to eat their brains. It is also covered in a Sickly Green Glow.
- Rezzoch by far.
- To date she has shown to have created the aforementioned Tree of Entry, destroyed the monster homeworld, corrupted a wretch to become it's new henchman and shown to be trying to do the same to the other kids.
- To reiterate she is literally the reason why the dead have risen and why many of monstrous beasts now roam the land
- In season 3 we had Jack suffering a horrific nightmare where he went to the pizza place and inside were the corpses of the monsters the kids befriended (including Rover). Then he stumbled outside and see the treehouse on fire which is heavily implied with the other kids inside...
- We are later treated to a vision of older Jack pulling a sled, assuring his friends they have to keep going...then zooming out behind, revealing he is talking to their skeletons!
Nightmare Fuel / The Last Kids on Earth