Board Thread:Naruto Gaiden/@comment-4704473-20150603131227/@comment-1359322-20150604114526

QuakingStar wrote: Obito showed Kisame his face after Kisame killed his master and he still told him that he was Madara Uchiha so that whole mask thing holds no water at all.

Obito could've used transformation and made himself look like Madara.