Shisui being the masked man....No

[SPIRTofleo]

Imo shisui should not be the masked man, he was one of the very few uchiha who stayed good and never fell into the curse of hatred, and him being the masked man would just ruin his legacy, plus if the masked man is shisui and shin is his son or whatever, then why would shin care about itachi?, and want to kill sasuke for someone he doesn't even know?, yeah maybe it's just his fathers dream and he's just following him, but it seems like he wants to get sasuke, just as much as his "Father", so idk, it doesn't make much sense for it to be shisui and his son, to me it would ruin shisui character, not everything should have a plot twist.

 

[Arima]

Kotoamatsukami says hi. Just kidding, I know he wouldn't have his own sharingan to use it.

 

[The Work]

Probably some character who's just butthurt about something that's not evil but have his own weird motive.

 

[Melanin]

What if Orochimaru/Kabuto:

• subjected Shisui to diabolical experiments.
• erased his memory.
• reprogrammed him to hate Sasuke.

 

[PowerMix160]

What if Orochimaru/Kabuto:

• subjected Shisui to diabolical experiments.
• erased his memory.
• reprogrammed him to hate Sasuke.

True, this could be a reason why Shisui's character is so evil... We must accept that this Akatsuki is Shisui, Kishimoto decided that, we can't do nothing to change ... it's his series.

 

[Eastbay510]

I'm thinking it's either Danzo or Deidara. Yea they both blew themselves up but those two have a grudge with Sasuke.

 

[SPIRTofleo]

What if Orochimaru/Kabuto:

• subjected Shisui to diabolical experiments.
• erased his memory.
• reprogrammed him to hate Sasuke.

But why I add in itachi? And why sasuke?, orchimaru said during the war, that he wants to see where sasuke goes, because he didn't follow him like kabuto did

 

[Melanin]

But why I add in itachi? And why sasuke?, orchimaru said during the war, that he wants to see where sasuke goes, because he didn't follow him like kabuto did

Maybe he broke through the programing and started acting on his own (kinda like the andriods and Dr. Dr. Gero).