Prinn was a male Human Soldier hailing from Alderaan. He served as a member of the Galactic Republic during the Cold War period, which saw conflict with the Sith Empire.
Within Alderaan's planetary generator, Prinn stood alongside General Gesselle Organa, Blenks, and Kan'grell. They were shielded by an immensely powerful force field, sustained by drawing power directly from the generator itself. However, a Sith apprentice under Darth Baras infiltrated the facility and sabotaged the generator. This forced it into backup mode, which cut off the excess power and consequently deactivated the Organa force field.
After the apprentice had massacred their forces, Prinn, along with Organa, Blenks, and Kan'grell, confronted the Sith Warrior. Organa attempted to negotiate with the Sith, but her offer was rejected. The Sith, seeking information about Organa's former handmaiden Jaesa Willsaam, began to torture Blenks, who was also Organa's lover. To prevent him from dying, Organa revealed that the Jedi Padawan Jaesa Willsaam's parents were still employed at Castle Organa. Having obtained the information regarding Willsaam's parents, the Sith Warrior executed Organa and her bodyguards, including Prinn, for their defiance of the Empire.