Sycorax is an ancient and powerful witch, one of the native inhabitants of the island. Sycorax's role is silent, there is nothing written in The Tempest about her appearance. She wears a robe and a skull to hide her face, the mysterious symbol of witchcraft, to protect her from more powerful and cruel ghosts and demons. Due to her age, she's too old to move easily, therefore she uses a crutch.
The costume itself consists of three parts - a robe, a skull mask and a wig with horns.