Den Siva Den Siva was a part of the Nagai invasion force that attempted to conquer the Galaxy shortly after the Battle of Endor . A romantic , enigmatic figure , Den fostered an obsessive fixation on the Zeltron Dani , which eventually led to him betraying his own people , in return for her life . Biography . Before the Invasion . As an advance agent of the Nagai , he was attached to the Dark Lady Lumiya , and joined her on Kinooine when she captured Luke Skywalker and the Zeltron Dani . Intrigued by the Zeltron , Den asked Lumiya for the privilege of interrogating and examining Dani , in the hope that he could learn much about the Zeltrons from her — and that perhaps in turn , she might learn something from him . Den ' s examination of Dani proved to be cruel and unusual , as he constantly penetrated her with the painful laser beams of an analysis grid . As the torturous examination intensified , Den became more and more taken by Dani , even as he drove her into a quiet shell of her former self . During one occasion , while Dani was recovering from yet another examination , Den found a beautiful flower growing from out of a rock crevice . He was surprised to have found beauty in something so weak and ephemeral — as a Nagai , he respected strength , efficiency and elegance more than fragility and tranquillity . When the Iskalonian Kiro managed to free Dani , Den engaged him in a vicious duel , during which both combatants were knocked from the cliff side and into a deep river . Den escaped , however , and managed to free Lumiya , who had been captured by Luke Skywalker . The Nagai Invade . By this point , the main Nagai force had entered the Galaxy and captured Kinooine , giving Den the chance to reunite with his people . He continued his obsession with Dani throughout the war , often gazing upon holograms of the Zeltron , and letting his thoughts dwell upon her , her brave response to his tortures , and how much he wanted to capture her once again . When Commander Knife began planning the invasion of Zeltros , Den immediately volunteered to lead the mission . Shortly afterwards , Den witnessed the murder of Wing Leader Tai , killed by Knife for accepting mercy from Princess Leia Organa on Trenwyth . Deeply shocked by this brutal justice , Den and his forces set off for Zeltros . Betrayal on Zeltros . Den ambushed and captured Leia and Dani on Zeltros , and his Nagai and Maccabree troops ambushed a party and rounded up most of the Zeltros elite – including the visiting Han Solo , Lando Calrissian and Chewbacca . The attack was badly timed , however , and coincided with a Tof assault on the world . Den was captured by the Tof , who threatened to shoot Dani if he didn ’ t agree to lead his squadron into an ambush . Although his Nagai force was wiped out , Den helped Han , Leia , Lando and Dani destroy the Tofs who had forced him into betraying his people . The Battle of Saijo . Cut off from his people by his actions , Den allied himself with the Alliance of Free Planets . He and Dani formed an unlikely partnership , feeling that they understood each other , even if Dani still disliked Den . Den took part in the attack on Saijo , in which Prince Sereno was captured and forced to surrender , ending the threat of the Tofs . Den Siva ’ s whereabouts as of then , and what became of his uneasy partnership with Dani , are both unknown .