J'yon grew up on Naboo and became invested in the Rebellion from the beginning ever since his father died in the Trade Federation invasion while his mother was pregnant. When the Rebellion caught wind of the plan to rescue Orn, J'yon was summoned to investigate the whereabouts of the map an ISB agent has to The Prison. After shooting down the ISB Agent's aircraft, he called it day. It wasn't until he heard of a Ryll smuggle operation inquiring about the crash that he decided to return to the scene of the crime to ensure the destruction of the map.