Thought it was Danzo for the longest, but I feel like he wouldn't be bald
So if this is Shisui, who was likely stronger than Itachi, and he has some small Juubi piece plus White Zetsu/Shin army under his belt, what is stopping him from defeating Team 7? He has S/T Teleportation, Izanagi, and probably all the entailing Uchiha abilities. Him getting defeated would be worse than the way Kishi did Kaguya
So if this is Shisui, who was likely stronger than Itachi, and he has some small Juubi piece plus White Zetsu/Shin army under his belt, what is stopping him from defeating Team 7? He has S/T Teleportation, Izanagi, and probably all the entailing Uchiha abilities. Him getting defeated would be worse than the way Kishi did Kaguya