A blank slate. Literally, that's it. And Kunz's the only one to call her that.

Hidden is the God of Space, and the partner of Kunz, the God of Time.
Hidden doesn't play any role in most of the web-comics, apart from "Resurrection Flowers", where she's an antagonist who sends off Kunz to stop the main characters from reversing time itself, since it messes with the order of the Universe.

Just as old as the Kunz Universe.

Hidden doesn't really have a gender or sex, but Kunz refers to it as female.

She doesn't have any facial hair neither in her actual form nor the religious depictions.

Hidden does not have any hair, however religious depictions of her show her with straight hair that goes upwards and looks like a helmet.

(In religious depictions)Hidden has light green hair.

Hidden doesn't have an exact height, but looks to be the same size as Kunz's hand.

Her physical representation is weightless.

Her body in a shape of hand (which is similar to Hamsa.)

She doesn't have a defined body type, since her entire body is a hand.

Her "skin" is green with bright-green tips on her fingers.

Hidden does not have a defined race.

Her eye color is seafoam green, with a white ring of reflected light in the center.

Hidden rules over her universe because she thinks it's her duty, short and simple.
After noticing her power of controlling space, she started thinking of it as a responsibility to use it to control the Order of the Universe.

Hidden is extremely ignorant to her beings' wishes, since she only does what is needed of her in global terms (keeping track of the objects that may possibly break the Order, and all the space in her Universe).
She doesn't care about life and just does what she thinks is necessary.

Hidden thinks of her partner Kunz as a show-off who wastes her time doing pointless things, and her stunts in order to get the attention of her beings are disapproved by Hidden because of the possibility of them breaking the Order of the Universe that she cherishes so much.

Hidden possesses tons of talents, but doesn't use even a millionth of a percent of what she can do, since she thinks of it as unnecessary.

Hidden does not have much of a personality besides being extremely defensive of the Order, and seems to be very responsible otherwise.

She does not need to eat, and thus she does not have a favorite food.

Her power to control space - she thinks of it as the only thing that makes her useful for keeping the Order of the Universe.

She does not have a favorite color.

Hidden's well, a god. A god of space, to be exact.

Hidden is not involved in politics.

Hidden is not involved in religion.

The day when her Universe came into existence, which is approximately 13-17 billion years ago.

Hidden came into existence right when her Universe did, too.
She only got noticed by Kunz 25 MYR after the creation of the Universe, which made her treasured by Kunz at first, since she was the only being that Kunz could communicate at the moment. Hidden didn't make a great companion though, so Kunz quickly ditched her.
As time went by, Hidden eventually got picked on by Kunz for her monotony, but didn't pay any attention to it, but later Kunz would start to appreciate Hidden more, at a point that she'd get somewhat obsessed, but those periods don't last long and Kunz then regrets them.

Hidden's physical form came from Kunz giving up a part of herself, and while Hidden didn't deem it as a necessary action, she was flattered nonetheless.