Zeth Amphion was a Jedi Knight who lived during the Imperial and Alliance years. He studied at the Temple with Caminus Amel and Niobe Letto. However, Order 66 was transmitted, and they escaped under the leadership of Orem Heb. Upon that, he worked for the Rebel Alliance as an R-22 pilot in Blue Squadron, helping them win several major victories, including those at Yavin and Endor. Following that, he was involved in the Grand Marshal Crisis, being one of the few Jedi to confront the Grand Marshal and his Dark Neophytes and survive. He would later contribute by battling them and a reborn Darth Opacus, giving staff sufficient time to evacuate and also defended the Lux Lucis from Marshal forces. Following that, he would continue to serve the New Republic through its many crises, such as battli