Every head which looks like a creeper.

A character, logo, or iconic item from the Dark Universe Franchise, a collection of well-known monsters from pop culture (Dracula, Werewolves, Frankenstein, Mummies, Ect).

Heads that are any form of Enderman.

Every head which looks like a minecraft guardian or elder guardian.

Every head that is a phantom.

Every head which looks like a shulker.

Every head which looks like a skeleton, wither skeleton, or stray with the typical Minecraft facial expression of skeletons.

Every head which looks like a slime.

Every head which looks like a spider.

Vanilla or inspired heads representing the Strider Mob from Minecraft.

Every head which looks like a zombie, husk, drowned or zombie-variant of another race or animal.