Scouchers

As a minor villainous creature in The Keys to the Kingdom series Scoucher is a particularly unpleasant type of Nithlings that issues from the narrowest of cracks and fractures, resulting in its very thin shape. They may take a variety of shapes; however, they always have many limbs that end in very fine tentacles. These tentacles are lined with tiny but very sharp teeth. They have a weakness to silver, ruthenium, rhodium, palladium, osmium, iridium, and platinum. One of them starts chasing Arthur in Grim Tuesday, but Arthur flees to Leaf's house for shelter. Leaf, after she gets cut by it, helps Arthur destroy it.

The second Scoucher appears when one of the Tuesday's Seven Grotesques pour nothing into his machine. It is killed when the Grotesque throw his silver ring to it.