By that, I mean I think White Zetsu's existence had something to do with a mutation involving Hashirama Senju's cells being attached to whoever Black Zetsu originally was.
Where is he????????????? As far as i can remember he aint dead right!?
Kishi might killed Yamato off-screen (kabuto extracting his cells assumingly killed him) so did he forgot about black zetsu??
(also i dug up the old thread because i actually use the search button unlike some..)