Hello Lorna, I have a type of shadow-like creatures in my Joan of England story... They are called just "shadows" and they travel to Earth from a separate reality via gateways, which have been opened by the Mages of that story.
My Shadows are described easily as being great, shapeless and totally black entities made of a shadow-like darkness about the size of an airliner, and they fly through the sky so fast throwing a destructive kind of magical fire that causes blasts and fires that easily destroy towns and cities...
In my opinion, giving eyes and other similar features to shadow-like beings ruins the scary effect =)
There exists a supernatural thing called the Shadowpeople, maybe you would find it interesting.
My Shadows are described easily as being great, shapeless and totally black entities made of a shadow-like darkness about the size of an airliner, and they fly through the sky so fast throwing a destructive kind of magical fire that causes blasts and fires that easily destroy towns and cities...
In my opinion, giving eyes and other similar features to shadow-like beings ruins the scary effect =)
There exists a supernatural thing called the Shadowpeople, maybe you would find it interesting.