Monday is about half a foot in size, a bit smaller than the average barn owl. Her petite size makes her exceedingly hard to spot when she's flying through the night sky. Her own eyes are large and filled with shimmering mercury, with pupils that can expand to give her fantastic night vision... as well as give her a cuteness factor of a newborn. A dusty, blue-tinged black downy coat of feathers and fur cover her from head to toe. She has a few silver tips on her wings, tail, and speckling her cheeks like freckles.

Her most distinguishing features are the huge ears that taper up to a point together, sensitive enough to pick out sound over long distance and hone in on prey. Like the owls she is often compared to, she is completely silent on her silver-dusted wings. Her four, stubby limbs end in dexterous, hairless fingers that can grasp and easily manipulate objects. She has a black, forked tongue tucked into her rounded, silver blaze-marked muzzle, with nostrils that can close entirely if needed. While she does have a set of canine teeth, her primary diet is omnivorous as shown by her molars and incisors, and she leans toward eating a wide variety of fruit and insects.

Her voice is light, sometimes verging on squeaky, the range mostly high-pitched with almost no capability for deep growling, bark or howling. She can chirp and otherwise mimic a wide variety of bird calls, as well as purring to some degree. Her default noise is a prrrpt?, similar to a cat activation sound.

While she can stand on her hind legs while using her wings to help balance, she typically walks about on fours, if she walks at all. For the most part she flits about on her wings, or hops about.

Mondsichel is a creation of the Dark, but her disposition would fool anyone.

She is bright, cheerful, and quick to make friends. She is a delight to be around (at least, as long as you don't find her annoying) and generally carefree. Her lackadaisical attitude is probably the main giveaway of her true nature, if her dark pelt isn't enough to caution you.

That said, she harbors little ill will toward any creature. She generally is a live and let live kind of person. She collects friends eagerly, but she absolutely is a fair-weather friend. The second there's danger, she's just as quick to abandon ship as she is to join in with reckless abandon. You can't exactly rely on her, though she's never going to outright betray anyone. She simply doesn't have the capability in her.

She is incapable of holding a grudge, but she's far from naive and almost impossible to manipulate. After all, she simply doesn't form attachments like you would expect. She lives in the moment, and perhaps is just too oblivious to the feelings of others.