When I saw Tobi's face there were tons of wrinkles and he has those weird triangle wrinkles around his eyes. It seems like every Uchiha has some weird face wrinkles like Itachi. Anyways it sort of reminded me of the leader of Root. If you look back at the chapters with that guy you can see a resemblance. Plus if you notice he always has one eye covered, the same eye that Tobi showed to Sasuke.