Screelings. I don’t think the picture from the series is creepy enough at all for a screeling, so here’s a picture of the Rake, which is supremely more accurate. (just imagine it’s metal claws are actually it’s own and it’s eyes are black and glittery)

First of all The Screeling song makes it all!
The screelings are loose and the Keeper may win.

His assassins have come to rip off your skin.

Golden eyes will see you if you try to run.

The screelings will get you and laugh like it’s fun.

Walk away slow or they’ll tear you apart,

And laugh all day long as they rip out your heart.

Golden eyes will see you if you try to stand still.

The screelings will get you, for the Keeper they kill.

Hack ‘em up, chop ‘em up, cut ‘em to bits

Or else they will get you while laughing in fits.

If the screelings don’t get you the Keeper will try.

To reach out and touch you, your skin he will fry.

Your mind he will flail, your soul he will take.

You’ll sleep with the dead, for life you’ll forsake.

You’ll die with the Keeper till the end of time.

He hates that you live, Your life is the crime.

The screelings might get you, it says so in text.

If the screelings don’t get you the Keeper is next,
lest he who’s born true can fight for life’s bond.

And that one is marked; He’s the pebble in the pond.

Screelings were squat, hunched over creatures armed with long, wicked claws instead of fingers on each hand. Their eyes were black with a golden glitter. Terry Goodkind’s description of a screeling in Stone of Tears depicts Screelings as “hardly more than a squat skeleton covered in a veneer of dry, crisp, blackened skin. Like a corpse that had dried in the sun for years…it was a thing of the underworld, and not hindered by all the frailties of life.”
Screelings had a supernatural speed and strength, and could scale sheer surfaces and ceilings. The screeling was known for its incessant laughter, doing so even when being hacked to pieces. Screelings were unaffected by direct additive magic attacks; wizard’s fire only makes them more deadly. They can only be defeated by being hacked to pieces, a feat which may be accomplished with extreme difficultly using weapons or using certain forms of Subtractive Magic.