there family it may not really be that case but it is really madara plan so madara has been training tobi to make it happen so i guess madara but maybe they are not using each other like that but they are actually a team
It would be messed up is Obito ended up betraying Madara like how Gin Ichimaru did Aizen, and Madara solo's him. I was mad when Gin died. I wasn't expecting that. :c