Quote Originally Posted by Garhert
I think it could be that Nagato is still himself and not in the current fight. Maybe Pein is just a result of Nagato. So maybe there are 7 "Peins" and the leader is Nagato. The 6 Peins we saw are just hes tools.
It's one possibility. However, even through our brief view of Nagato's personality, I don't think he's the type to become a bad guy. I think there's a higher possibility that Yahiko somehow took the Rin-Nigan. On the other hand, would Konan stand and fight next t a guy who betrayed his loyal friend? This backstory is too twisted and not yet detailed enough. We need more flashbacks.

I kinda want it to end faster though, since Sasuke is supposedly still standing there ready to fight Itachi.