Dera IV

 is the fourth planet in the Dera System.

The Remans moved a derelict D'deridex Battleship within a natural cavern on Dera IV and use it as a underground base.

Dera IV may be the homeworld of the Jackal Mastiff.

Mission involved

 * The player visits the vicinity of Dera IV and a Reman base beneath its surface in search for the Reman Resistance and its leader Obisek