The following mainly comes from initial traditional tribes in general, not including tribes who have mixed origins and other case-by-case variable exceptions.

As one of the nine foundational tribes, the [Oni Demon Tribe] were initially as mountain-living tribes who have deep tradition of worshipping certain deity that was associated with war and death. After receiving their own Grimm-form,

[Grimm-form appearance]

(Initial stage form)

• black (Japanese Oni-face-looking) demon tattoo on face

• black muscular curved branched tattoos covering on full body's external outline (such as the side of the limbs)

(Terminal stage form)

• dark-purple skin

• two small slightly upper-toward curved horns on forehead

[Grimm-form ability]

• enhanced physical condition (enhanced strength, enhanced speed, enhance endurance)

• regenerative healing factor (able to heal up considerable number of penetrating wounds)

Combat Application:

{Individual level}:

{Group level}:

[Societal Aspects]

[Cultural Aspects]