Jeek, a Neimoidian of the male gender, had a twin brother named Teek. He and his brother were both Neimoidians. In the Imperial Science Bureau's Research Corps Eight, Jeek and Teek were both tier-six inventors, a point of pride for them, as it was uncommon for non-Humans to achieve this rank in the xenophobic Empire. The two brothers journeyed to Tatooine during the Cold War, where they were stationed at separate Imperial outposts. At their respective posts, they each requested assistance from random Imperial personnel to test new battle droids.