Kupohans had two sets of ears and six frequency filters, giving them a range of hearing far beyond humans and most other species and making them ideal spies. They were able to filter out extraneous noise in crowded cantinas and eavesdrop on single conversations across the room. Their senses of smell and sight were also superior to humans.
The Kupohans did not wear jewelry for fashion, but rather as an indication of status. Their neck torcs were golden rings that they acquired once every decade. These torcs allowed them to avoid rude questions pertaining to age, since one was able to count the rings and know that an individual was in their twenties, thirties, and so on.
Kevin Hearne's concept for the Kupohan species.
The Kupohan species were created for Kevin Hearne's 2015 novel, Heir to the Jedi. While writing the novel, Hearne drew what he envisioned the Kupohan to look like, and used the drawing as a reference. He later posted the image on his Twitter page.
- Star Wars: Smuggler's Guide