I was always bothered by the bird men. They don't give them a name in the film and somewhere I found the name vore associated with pictures of them, so that's what I'm calling them.
This is my first attempt at statting a monster out of Astonishing Swordsmen & Sorcerers of Hyborea, so it may be a bit off.
No. Encounted: 2d6
Movement: 50 (fly 120)
Armour Class: 6
Hit Dice: 3
No. of Attacks: 1 (Grapple)
Damage: see Special
Saving Throw: 15
Experience Points: 120
The vore are mysterious flesh-eating bird men from a bygone age. Those that encounter them, never forget. While some prefer to cook their meals, the primary means of consumption is quite horifying. The creature will grapple a humanoid and release a flesheating acid, absorbing nutrients through its fleshy wings, leaving only bones.
No one knows the true origins of the vore. Some speculate that they are related to the more common Hyborean bird men, though no one has found any true evidence of this. Other's speculate a connection to harpies. The most common belief is that the creatures were created to be assassins by some now dead or forgotten god of the sky.
* Any creature grappled by the Vore automatically takes 1d8 acid damage on the vore's turn. This continues until the creature is dead or escapes the vore's grasp.