Koochoo served as the bodyguard for Wasanti during his dealing as a fence for the criminal organization known as the Veiled Sorority on the Outer Rim world Saleucami. He was programed to be completely loyal and unable to intentionally cause harm to his owner. This protocol did not apply to others, and Wasanti had no qualms about using Koochoo to hold off enemies while he escaped unharmed.
Like other ASP-series droids, Koochoo was only capable of speaking the worlds "Affirmative" and "Negative," which he spoke in a mechanized Huttese. His name meant "idiot" or "moron" in the Hutt language.