Gorgon

the Gorgons were hideous female Humanoid creatures whose hair is covered with a nest of poisonous snakes.

The lion,the white witch and the wardrobe
Shes were served the white witch and participated in the sacrifice of Aslan and the battle of Beruna.

The lion,the white witch and the wardrobe (Disney movie)
Concept art for the disney movie showed that Gorgones ere planned to be included in Jadis's army.