It was unknown where the Kadrillians evolved, but in the decade before the Battle of Yavin they colonized the world of Kadril. In this world the group divided into two groups. The Kadrillians were peaceful and dedicated themselves to the manufacturing of all kinds of crystals used for medicine and communication. The Kadrillians sought safety from their cities and were quite shy. Another group, the Nociv, felt that the Kadrillians deviated too much from their original intestine and were more primitive in nature. However, both groups were peaceful.
In 1 ABY, Kadril was visited by Heroes of Yavin as well as by Darth Vader. Father tried to make a filter for a chemical weapon called Pacifog with the Kunda on Kadril. Eventually, the heroes could prevent this by seeking help from the Nociv.
- Planet of Kadril (First appearance)
- The University of Sanbra Guide to Intelligent Life: The Marvel Series"—Star Wars Gamer 1 (Indirect mention only) "
- The Complete Star Wars Encyclopedia, Vol. II ("Nociv")
- "The Early Days of the Expanded Universe"—Star Wars Insider 141