Lorz Seppri was an officer in the Rebel Alliance and later the New Republic.
Lorz was born on the agricultural world of Reytha a year before the Trade Federation Invasion of Naboo. At the start of the Clone Wars his father joined the Republic Navy, which became the Imperial Navy after the war.
Lorz followed in his father's footsteps, applying to the Imperial Academy at a young age. As the years passed, however, the two became disillusioned with the Empire, and hoped to defect. They finally got the chance during a skirmish in 2 ABY. The elder Seppri acted brashly by ordering Victory I-class Star Destroyer to fire upon the Imperial ships.
The captain overestimated his crew's loyalty to him, as he was killed by his subordinates in the bridge of his ship. Lorz managed to escape to the Rebel Alliance in his TIE/gt starfighter.
Upon joining the Rebellion, Lorz Seppri received the rank of Lieutenant and founded Arrow Squadron. Two years later, he gave up being a starfighter pilot and was promoted to Captain of the 3rd Strike Wing's carrier ship, the Praetor, and its escort. He served under Admiral Si Groank.
The Praetor was destroyed during the Battle of Endor, but Captain Seppri survived and switched the remainder of his force to the Consul. He and his command fought against Grand Admiral Mitth'raw'nuruodo.
During the Grekins campaign, Arrow Group's new leader, Aiddat, was promoted to lead the entire 3rd Strike Wing. Captain Seppri became his direct superior officer and befriended him. After the Battle of Magrex, Aiddat joined the Jedi Praxeum. He left the fleet, but fought alongside Seppri on later missions.
The last of those missions was the devastating Yuuzhan Vong invasion of Eniam. During the battle, the Consul was destroyed and Lorz, now an Admiral, was killed.