Originally posted by TheAuraAngel
Actually it's probably the opposite. There would be no reason to fill them in because they'd just do what you want anyway. Kabuto neglected to mention that Sasuke was still alive to Deidara after all. And Tobi wouldn't be the main leader all things considered because it's very likely Kabuto will use them to betray Madara.
He is the 'general,' though, in overall command of the war and with command of the Zetsu army that they need to coordinate with.
Details like Sasuke's life are unneeded since he's a secret who's deployed independently anyway, but Tobi is the boss who's calling the strategy, you sorta got to mention that if you want to have orders like, "Follow his orders in battle unless I, Kabuto, say otherwise."
One mask is a spiral with one eye hole, the other is a sharingan mask that covers his hair and has his left eye open. That and the new duds are significantly different from what we saw of Tobi in his appearance. As far as the voice goes, the anime suggests that Madara uses a different voice for his Tobi persona.
Still. Spiral mask, sharingan in the same eye, hangs with Zetsu, not among the dead. Short list of who that could be.