A Jedi Holocron was constructed by the Jedi Knight Samuro, who sacrificed himself to imprison the energy vampire and Countess Rajine with the Force many centuries before the Clone Wars. Knowing that his power would not last forever, the Jedi used his holocron to record the means with which another Jedi could one day finish the task he started and destroy Rajine's evil. Samuro died entrusting the holocron to his droid, Z-18 who would later pass on the cube to Mace Windu who had journeyed to the planet looking for Alpha-2 Squad. Windu activated the holocron before Raije and Samuro appeared. Together the Jedi spoke the words of banishment which turned the vampire's zombie slaves against her to finally defeat the Countess once and for all.
- The Complete Star Wars Encyclopedia, Vol. III ("Samuro")