Tenebris

Tenebris was created from the will of Kaguya Shadow.

Apperance
Tenebris's true form is a completely black, humanoid figure lacking any hair or visible orifices, made up of a black mass which it can shape and resize at will. The black mass contains two yellow eyes, which lack any visible sclerae or pupils, and it occasionally shapes itself to form a mouth with jagged teeth. Tenebri's eyes and consciousness can move to any point of the black mass, even if it is split into multiple parts. It is able to cover the body of another living being and control it, and its eyes can vanish entirely if it is possessing a body with a dōjutsu it wishes to make use of.

Abilities
Being a product of Shadow's will, Tenebris itself is also able to manifest its will to gain influence over others, either by subtly manipulating their thoughts or forcefully manipulating their bodies by attaching himself to them. By attaching itself to others, Tenebris is able to control the target's body and use their abilities as its own if they are in a weakened state. Tenebris melding with somebody also has the effect of sustaining their life, allowing them to temporarily survive such things as using a sacrificial technique or having a tailed beast extracted from them. However, should the target regain control of their body, they can prevent Tenebris from detaching itself, thus using this trait against it.

Tenebris is able record the events it observes as well as show these "recordings" to others by merging with them.

In its original form, it has shown the ability to phase and travel through its surroundings Should the need arise, Tenebris is capable of telepathically communicating with other individuals. Tenebris is also able to absorb and distribute chakra through physical contact.

Fitting its malleable physiology, Tenebris has shown the ability to alter its form and shape, being able to form itself into a humanoid shape or stretch to great lengths.

As an artificial human created from the manifested will of Shadow, Kaguya is ageless and biologically immortal. and It also does not require any sustenance intake, surviving without the needs of food or water and even survived when being bisected.