In the
fictional world of
Glorantha, it is thought that the first thing that
evolved from
Primal Chaos was
Darkness, and all other things evolved within the Darkness to form the world. Thus, the Darkness gods are the most
primal, and in many ways the most
powerful, deities of Glorantha.
Darkness and cold are represented by the
Darkness Rune. In combination with the
Man Rune, it signifies
Trolls ("dark man"). Trolls are the
native mortals of
Hell and
the Underworld, and it comes
naturally to them to
worship the deities of Darkness.
When
Orlanth slew
Yelm, the Sun, the trolls were driven forth from Hell by his hateful light. They conquered the lightless surface world, and fiercely defended their new domain from the ravages of Chaos. In that war, their mother-goddess Kyger Litor was cursed by Chaos so that trolls would breed degenerate
trollkin. Thus, trolls have an antipathy toward
Light cultists, and hate Chaos passionately.