About Shisui Uchiha theory..

[Narusenpou]

the nose and the lateral continuity of the palpebral outline seem familiar though

 

[Omar19992010]

Oh shoot. You might be on track. Reason of all this and that Itachi quotations.

It's like 25 Years after his supposed Death so he's gonna look different.

 

[New Dawn]

Its shisui. The nose, lips and face shape are dead on.

 

[Shellshocked]

That guy has to be someone familiar with s06 power and the dojutsu. I'm thinking it 1 of two people.
1. Would be zetsu he knows all the things madara/obito did and would be able to create that mini pokejubi also he would know the location of obito lab to get the eyes and can split hisself in two making him a son "onion"
2. This is a bit out there but Izuna he was said to be as skilled as madara and a simple plot twist inzanagi explains him alive it worked for madara. Either way obito treasure chest of eyes has to come into play

 

[Ansatsuken]

He is very badass viallin of 21st century