The Gorog originally were based on the moon Kr on the Chiss border and were destroyed by Mara Jade and Luke Skywalker, Han and Leia Organa Solo, a group of Jedi Masters from the Jedi academy on Ossus and a squad of specially equipped 'Bugcruncher' battle droids. Welk was killed by Luke Skywalker in the Battle of Kr. All of this occurred 7 years after the Fall of Coruscant and roughly 5 years after the Battle of Yuuzhan'Tar. The Dark nest was thought to be destroyed along with the Jedi turned-Gorog Joiner Alema Rar. But the nest and Alema survived and moved to the Tusken's Eye in the Utegetu nebula where the Killiks mostly had peace for one year. During their time in the Utegetu Nebula, the Dark Nest built a fleet of 11 armed hive ships, harboured pirates, killed Supreme Commander Sien Sovv of the Alliance, smuggled dark nest membrosia to insect worlds, framed the Jedi for a problem the Fizz on the Utegetu worlds and convinced the Killiks and UnuThul to attack the galaxy. All this was done under the command of Lomi Plo and Alema Rar, the night herald.