Unuk IV is a planet which is home to a race of violent natives. It is known for having a beautiful landscape.
Captain Mercer mentioned to Pria that despite how beautiful it is, nobody goes to Unuk IV because the people who live there are "nightmarish". They capture outsiders who visit their world and then methodiacally dismember them as a sacrifice to their Raccoon God.
- The Unuk's natives worshipping a Raccoon god could be a reference to the popular Guardians of the Galaxy character Rocket Raccoon.