Neffy begins work on a 3rd biobliterator, and finds vox's arm floating through space and recognisez it from the tv show. So he uses the new bliterater on it to reanimate a cyborg vox. They discover that they both have beef with ratchet and team up. That's my prediction.
Hummm 2 things:
1- Neffy has no harm on Ratchet (altough he can still be a bad guy)
2- Nefarious is nowhere to be seen in Full Frontal Assault/ Q-Force.