Trollen skin is slightly greyish-green (varying with area of origin, as with elves, goblins and faleighs). Hair ranges from blond to very dark brown. Eyes can be anything from yellow-brown to brown, green to brown or grey.
Srolli, along with rocca, have their organs reversed by comparison to the other three sape races ([situs inversus totalis] in effect; rarely someone is born with 'reversed' organs, heart on the left).
Srolli are typically skilled at scientific subjects, with a slight statistical sex bias: males towards mathematics, females towards physical sciences.
Some srolli are nervous of other races except voks and like to keep themselves relatively isolated (in modern Shade, moving home is quite common, so srolli are able to move towards or away from the quieter areas as they like).
Srolli typically have very sensitive noses when it comes to chemicals and metals. Their sense of smell as applied to people, food or plant matter is only average.
Srolli are the least likely of the five races to have magical ability. Nevertheless, it is very possible to find a srollen magician. Telepathy is not common, with the incidence only a little higher than in ferais.
Srolli tend toward dense bones and can weigh as much as a taller ferais. They also put on weight, or muscle, relatively easily. Their lungs are relatively small and they can tend to low-level chronic hyperventilation.