They are short humanoid creatures with bluish skin, long arms, small legs and pointed ears. They are known for their mastery of magic (to varied degrees of ability depending on the individual) and move around exclusively by floating. Only the females are seen to have hair; although older males sometimes grow bushy white eyebrows and long beards. Most of their buildings and furniture also levitate.
Members of this species often conceal themselves in heavy clothing, and consider revealing their faces a very intimate act. The mischievous Trollan pranksters from the region of Karadania are an exception to this, and wear more revealing outfits.
Besides the Trollan people, the planet Trolla is also home to several non-sapient lifeforms, including a large three-eyed reptilianoid which is domesticated by the Trollans; an arboreal cephalopod-like predator; and the massive worm-like Skargs, considered the most dangerous creatures on Trolla.