I think we sort of established Psy-Fi as MIA. If he comes back later on, maybe we could have Psy-Fi dramatically return to Thoughttown and tell his story.
I just realized that Lightwards is going to be even more irritated at Nighthound than he already is. Nighthound was sent to recrtuit or destroy ALL of the area's Epics, but Ray was all he came back with. Now it's known that Aldo, Cricket, Chicago Joe, and Backtrack were all present in the city, completely ignored by our favorite dinosaur-riding hound.
Did he search just long enough to find the first Epic with a pretty face and then call it a day?