The Nelkarite are a tall race, typically of the same height and weight as Humans. Their skin ranged in color from peach to a crimson red. Most had dark, black eyes, although some were born with silver irises, a mark that was often seen as an affinity for the Force.
Due to Nelkar having a unique atmosphere composed of helium and a gas unique to their world, the Nelkarite had to wear an antiox breath mask and protective goggles whenever in atmospheres of a different composition. This equipment protected them from carbon dioxide, nitrogen, and oxygen, which were fatal to a Nelkarite.