Board Thread:Naruto News/@comment-945885-20150611114734/@comment-945885-20150611115954

He could be anyone, honestly. Probably the threat she was preparing for with there White Zetsu army.

He could be a forgotten Otsutsuki Clan member, or her husband, or someone from a rival clan on her homeworld. Hell, maybe he's from a rival clan that the Otsutsuki were at war with, and he found a Divine Tree of his own to fuse with, and now he's out to finish the job.

It could be just about anything...