Info: Umbralings are creature's of large size and very thin and often are found alone.

habitat: They mostly live near abandoned places, where fog is very intense (reason of how they got those glowing eyes making them able see in the dark and fog)

coloration's: They can have any color, as long as is a dark color, they has some little white parts on their back

diet: They can eat anything; but mostly they uses their shadow power to eat the "bad energies" of someone, making the "victim" don't have bad mood and feel betrer

nature: when not hunting they can be quite friendly
But lonely creatures but if threatened or provoked
can be quite aggressive but will often flee if the threat
they are dealing with is too strong.

height: on average a Umbraling on all four's is
roughly around 5 feet tall but when on there hinds
they can be around 7 to 9 feet tall.

weight: on average a Umbraling is around 100
pounds. (Lighter than they should be, since they are creatures made of shadows and besides are very thin)

Skin: their skin are very soft, and lightly wet at the touch, they mostly has black and very dark colors with rare white lines

Stitches: all them very often has some stitches through their bodies, those really are closed "mouths" what they closed themselves, and they can use their two long tongues to get them through their body inside and go into those mouths. Very often they has those mouths mostly under their fore paws or on their chest and tail.

(Here you can see a little example of their "mouths" (traditional version)
http://sta.sh/04qqlpeczqc

Some facts: They adapted this form starting from a mix of nightmares, bad dreams, bad mood, lack of feelings, etc, but they are shapeshifters, and besides has two very long tongues, since they has mouths on their forepaws, and has stitches in some parts of their body, what are possibly more mouths, but they decided to close them, and even different of the look, most of them are lonely and are mostly seen in abandoned places during the night, but are neutral, and defensive.
As defense system, they can use the nightmare's powers to release shadows what can are able to torment other's mind for a momment.
And their true form can be revealed through a mirror or just returning to their form