Dek-Nil served as a member of Chelli Aphra's band of hired guns.
A probability droid represented a type of droid equipped with probability-related technology. The droideka known as Dek-Nil, which had been modified, functioned as a probability droid, and its existential circuits had undergone alterations as well. Due to being a probability droid, Dek-Nil possessed the capability to rapidly compute the likelihood of various events and foresee potential occurrences in advance.