Originally Posted by AkamaruChewtoy
After checking most scenes that involve Madara/Tobi and Zetzu and some with Zetzu alone, I cannot find one instance that Zetzu refers to Madara as Madara. Anyone want to give me proof to the contrary? more interesting, I came across this scene:
They seem more like buddies than a master and subordinate. I wonder how much Zetzu really knows because he seems to be the only one Madara trusts. Still, why he uses Tobi, I don't know.
Good effort on your part. Tobi seems to be the boss in that relationship however because Zetsu didn't know about Itachi's illness (in Sasuke vs Itachi) and Tobi knew (he explained it later to Sasuke) and now Tobi commanded Zetsu to go check on Kisame and not to fight Naruto.
So that makes me think Tobi knows more about his plans than Zetsu (not an equal partnership).