Cult of Gethul came into existence in 3631 BBY around an abhorrent being called Gethul. The group was founded by Adelade, who was once a Jedi Master. After the demise of Vaylin, the Empress of the Eternal Empire, and the subsequent creation of the Eternal Alliance, Adelade was given specific coordinates to a spot on Makeb by an unknown individual. The tip suggested that a significant Force enigma was hidden at that location, prompting Adelade to lead an investigation. The team discovered Gethul, a being of immense power and mysterious origins, which had been dormant under the planet for thousands of years. Adelade and her companions were influenced by Gethul's "song," leading them to establish the Cult of Gethul and work towards fully awakening the creature. Upon discovering this plot and concerned that a fully awakened Gethul could destabilize Makeb's core and destroy the planet, Admiral Bey'wan Aygo of the Alliance military dispatched a team to thwart Adelade's scheme. This team engaged cult members and the local fauna, which were also under the control of Adelade and Gethul. Ultimately, they confronted and defeated Adelade, then detonated the D-5X probe droid, loaded with explosives, inside Gethul's mouth. This action eliminated the abomination, neutralizing the threat it posed, and effectively disbanding the cult.