After the stings of the native big blue butterflies sickened Yokul, Frisbee, and three other farmers, who vanished gibbering into the farming world's forests, Leefer was the only farmer left. The strong smell of his aftershave protected him from the insects, although he was unaware of this. Teggs, Arx, Gipsy, and Iggy met Leefer when they came to investigate a distress call from Noxia-4, and he told them about the strange things that had been happening on the planet. He and Iggy tried to collect a sample of sickened crops, but were unable to because of the robots that Yokul had set earlier to protect them.