The Duel on Almania was a confrontation between the Dark Jedi Kueller and Luke Skywalker, who was aided by his sister Leia Organa Solo. Skywalker had previously been injured and then captured by Kueller upon his arrival on Almania, but later escaped with the aid of a native animal, the thernbee. Skywalker was aided by his sister, who came to Almania to rescue him, but Kueller soon confronted the two of them, intent on killing them both. Skywalker dueled Kueller, but in his weakened state, was forced back as Kueller drew on his anger to increase his strength. Organa Solo fired several blaster shots at Kueller, but the Dark Jedi deflected them. Skywalker realized that prolonging the duel was only making Kueller stronger and prepared to sacrifice himself as his mentor Obi-Wan Kenobi had done, and then guide Leia to defeat Kueller. However, at that point, Han Solo, Chewbacca, and Mara Jade arrived with ysalamiri, which repelled the Force. Caught in the Force-empty bubble, Kueller was momentarily stunned. Feeling that he needed more power, Kueller prepared to activate a series of detonator-rigged droids around the galaxy and to draw on the power of the disturbance in the Force that the thousands of deaths caused by the explosions would generate. However, before he could do so, Leia Organa Solo shot and killed him.