Darkness elementals are Shades which are scary and cold.
Moon elementals are Lunes which are maddening or Selenes which are connected with the Blue Moon (I think).
Presumably, Shades aren't included in the RuneQuest II rules because of the ambiguity of Darkness as an element (OK inside Glorantha, iffy outside Glorantha). I'd have other types of elemental as well, not restricted to the normal elements.
Shade:
STR 1D6/cubic metre
SIZ 1 per cubic metre
INT 3
POW 1D6/cubic metre
DEX 2D6
HP 1D6 per cubic metre
Combat Actions 2
Movement 12m
A shade attacks by Fearshock. It matches its Persistence vs any engulfed character's Resilience, with a success meaning the person is affected by the Fear divine spell for 15 minutes. Partially engulfed characters receive a +50% bonus to their Resilience against this effect.
Anyone engulfed by a shade takes 1 point of cold damage to a random hit location, ignoring armour, per combat round because of the intense coldness of the shade's form.
Lune
STR 1D6/cubic metre
SIZ 1 per cubic metre
INT 3
POW 1D6/cubic metre
DEX 2D6
HP 1D6 per cubic metre
Combat Actions 2
Movement 12m
Lunes are elementals formed from the Moon itself. They are manifested on the Moon or where there are Moon Rocks. Each cubic metre of Selene requires 6 ENC of Moon Rock to manifect. In Second Age Glorantha the Red Moon has not yet appeared, so Moon Rock should be incredibly rare, being the remnants of the bodies of earlier Moon Goddesses.
A lune attacks by Madness. It matches its Persistence vs any engulfed character's Resilience, with a success meaning the person is affected by the Madness divine spell for 15 minutes. Partially engulfed characters receive a +50% bonus to their Resilience against this effect.
Anyone engulfed by a lune loses 1 Magic Point per combat round, because of the intense magical entropy of the lune's form.
Selene
STR 1D6/cubic metre
SIZ 1 per cubic metre
INT 3
POW 1D6/cubic metre
DEX 2D6
HP 1D6 per cubic metre
Combat Actions 2
Movement 12m
Selenes are elementals formed from the light of the Blue Moon. They are manifested on the Blue Moon Plateau or where there are Blue Moon Rocks. Each cubic metre of Selene requires 6 ENC of Blue Moon Rock to manifect.
Selenes are invisible and indetectable by most senses, although Shamans might be able to sense them. They are visible to those under the effect of certain spells, such as Soul Sight, Mystic Vision or Second Sight.
Anyone engulfed by a Selene loses 1 Magic Point and 1 point of cold damage to a random hit location, ignoring armour, per combat round, because of the intense magical entropy of the selene's form.