The telepathic encounter with the Thrint left the confused Greenberg with two sets of memories, his own and Kzanol's. He instinctively assumed he was Kzanol, the much more powerful telepath. Both Greenberg and the real Kzanol stole spaceships and raced to reclaim the thought-amplifying machine on Neptune, which was powerful enough to enable a single Thrint to control every thinking being in the Solar System. The chase led to Pluto, which had been a moon of Neptune before it was knocked into its own orbit by the impact of Kzanol's ship. Eventually, Greenberg's personality reasserted itself and, armed with the knowledge of how to resist the Power (from Kzanol's own memories), Greenberg trapped Kzanol again in a stasis field.