Tonra was a human male who served as a sergeant, and later a captain, in the Royal Naboo Security Forces. He fought during the Trade Federation's Invasion of Naboo. Often accompanying the handmaiden Sabé, he continued to assist Padmé Amidala, even after she transitioned from queen to senator of Naboo. Tonra accompanied Sabé to Tatooine where they attempted to free slaves. After Amidala's death, he and Sabé decided to find out how she had died, needing to change their identities to do so. Under Sabé's leadership, Tonra and other friends of Amidala became the Amidalans, a group dedicated to bringing justice to Amidala's killer.