Creeper

Creepers are a breed of demons. They are very powerful, large cloaked demons who dwell in the slivers of night. They have large white eyes, claws and have an unusual facial structure. Their powers are unknown.

History
Piper Halliwell vanquished a leader of the Creepers in preparation for Wyatt's Wiccaning. This could indicate that they prey on or feed of spirits of the deceased.

Spells
(Although there was never a page seen, Piper says she found the spell in the Book of Shadows. There was also a vanquishing potion.)

To Summon a Creeper

 * Demons who dwell
 * in slivers of night,
 * Uncloak your shadows
 * to witches sight.