- "I'd advise you to say 'yes.' These creatures would be very upset if you didn't approve of their present. It would be like telling them you don't approve of them as a species"
- ―C-3PO, explaining the species' customs to his companions
An unidentified Underworld species dwelled in the sewers of the Coruscant underworld around 0 ABY. They were a small, winged species with green fangs, which lived in the ruins of ancient buildings. They revered Wookiees for unknown reasons.
It was customary of the species to exchange gifts upon meeting new people. When Chewbacca and his entourage encountered the Underworld avians circa 0 ABY, they swapped weapons for glowworms to assure the creatures they harbored no ill will towards them.
- Star Wars Missions 15: Voyage to the Underworld (First appearance)