Leuric is an unusually intelligent human who has invented a glider. He is as stubborn as he is ingenious, and recklessly flies where he can be seen by gorilla troopers. Despite the fugitives attempts to get him to safety, he is captured and taken to the garrison. There, Carsia orders him to build another glider and demonstrate it. He agrees, wanting only to fly once, in spite of any consequences, and resists the fugitives attempts to help him escape. He ultimately is able to fly his glider, with Galen, and crashes into the sea to appear as if they have been killed, when in fact the astronauts are waiting to rescue them both.