Hey guys zerphon here!
I have thought of something for a long time
since the senju and uchiha clan are related by the sage of six paths and the uzumaki clan is related to the senju arent a few character related or they are long lost cousins
these are the people who are or might be related...
tobi is an old mizukage i know his actual name but i forgot it
when he shows kisame his face apparently the peson closest to him kisame says " oh its you, lord mizukage, (name i forgot)"