(Only 4th wall character)

Minus is a strange anomaly of the world, not created via something normal like "The Fountain" or a sin or even an elder god-like Vertigo or Sanguine.
Minus just exists somehow and came into existence via the Midnight Memorabilia mod for the FNF internet game,
spawning from the health bar icons and some fan art doodles by Artazura, she somehow just appeared in this world, I guess much like Jaiden Animations & her chibi self Minus just came to be.

However unlike chibi Jaiden, Minus is nowhere near chibi given OG Midnight's size of 15ft, Minus comes in at your average size of 6ft tall so 1/3 of Midnight's size, the bigger difference, however, is unlike chibi Jaiden, that still, for the most part, adheres to realistic rules and motions Minus operates on complete toon logic and toon physics.

Able to pull things from the "Behind The Back" dimension or as its also known the "Toon Space", She can morph and stretch her body at will to mimic things like rabbits by pulling and stretching her horns to look like rabbit ears or do a full transformation like pulling her horns straight and her muzzle longer to look like pure green renamon or anything she desires, she can also use this rubber hose power to bend and stretch around attacks from sin to blessing level either dodging or deflecting even the strongest sin or blessing level attack in some cartoony way and if a direct hit can land, her body will mould to the shape of the attack or weapon or if it would be a clean cut via something like Furia's sword or Lyra's pincers then Minus's head would detach from her body playing up the "Headless Chicken" gag where in the body would crawl around searching for the head that is calling to it or some kind of "Regrowth" gag like the body reaching into the neck hole and pulling the head out.
with only void entities able to deal damage to Minus as their power makes her toon logic null & void.

as you can tell her design is a more basic cartoony version of Midnight with very few colours the main one being a light soul fire green with some red and purple clothing, like the red boots Koumori wears.
Her tail holds a full moon as opposed to the OG's crescent moon, a plasma ball-looking thing she calls "The Great Toon Moon" which seems to be where all of her toon powers come from like the aforementioned toon space and her ability to bend and stretch how she desires as seen above with her stretching into Renamon as we all know you like her as she is the furry queen awooo!

As for her personality Minus has both her own and the original's personality with her main personality being your more toon-like personality laughing and joking around with people, telling both verbal and physical gags to the point of annoyance for some more serious people like Furia but is also able to be more serious and able to go into that dominant and seductive personality of her counterpart even if her dominance and suction is a lot weirder and again more toony like role-playing as the grey cartoon rabbit or of course as mentioned above teasing furries as there Digi-Queen but these more seductive traits are more toned down from the OG taking a back seat to her more clown/jester-like personality after all she is a toon and toons are meant to do silly things that will make others laugh to the point of being obnoxious with some like Midnight's big sister Furia wanting to crush the little green shit given her more serious nature and quick to anger temper being an archdemon of wrath.

Of course, Minus should not be taken lightly as while toon attacks can be devastating we must not forget that at the end of the day she still is Midnight and under that cute goofy clown show there is still a greedy manipulative bitch that is still technically an archdemon and as such can still take your soul if your not careful, Souls taken stored in the toon moon on her tail witch give her extra power, with the soul now trapped and forced to dance to a cartoon's tune.
Souls that like her, can now be moulded and stretched to a form she finds more fitting for you and more pleasing to her as you become a powerless clown on a screwball's strings.

Of course, being connected to Midnight in some way, both the original & toon have the power to transfer souls to one another, so if midnight takes interest in one that Minus has it can be sent from the toon moon to Aplistia and vice versa.

As for Minus's place of residence, it is of course on the island of Midnight Mountain, she is located somewhere in the cave systems within the 3 peaks that connect to everything to everything else like Midnight's throne room, this area of the caverns have since come to be known as the Minus Caves.
An offshoot of caves that you know you are in when you get out of the Egyptian halls and Egyptian-themed caves and everything turns into more classic-looking caves with a cartoonish look, an area of bending and twisting paths full of stalagmites and stalactites that also seem to twist and curve like something out of a Tim Burton cartoon or early 90's rubber hose cartoon, the rock formations are all slightly mad forming in impossible angels and shapes that by all logic should topple over or fall in on themselves but don't, madness I tell you much like the real world counterpart of the mad rocks located in a valley called Trollers Gill, England.
The deeper in you get the more nonsense everything becomes following the idea of Alice in wonderland the deep down the rabbit hole you go the more reality loses meaning, fitting considering our little screwy toon's favourite body morph is a rabbit, living up to the toon