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 [Six-arms Demon Tribe] were initially as several of separated tribes who had common custom on worshipping certain six-armed deity. After receiving their own Grimm-form,
[Grimm-form appearance]
purple skin
black-outlined purple-central vertical-symmetrical white flame-shaped mark on middle the forehead
(Terminal stage)
[Grimm-form ability]
enhanced strength and stamina
(minor) healing factor
generate additional two pairs of pseudo-biological-texture arms (a pairs of arms are positioned on behind the shoulders while other pairs are positioned on behind between lower chest and upper waist)
Combat Application:
[Societal Aspects]
[Cultural Aspects]
Despite having the common custom on worshipping the six-armed deity, the detailed religion content on their six-armed deity have their own interpretation among each different tribes