Varaian

Although they appear in humanoid form when interacting with other species, the  are believed to be beings of pure energy. They are known for their curiosity, spending centuries studying "subjects" of interest. These subjects are often new younger races. Watching their development as they try to establish themselves in the galaxy... Varaians are said to be very solitary. No one can remember seeing more than one Varaian at a time. It is even rumored to be a very bad omen.