He will be a major darkside player by this point. He will most likley turn out to be Chancelor Palipitine.
Nothing is real.
Both are 1.87 meters tall. Sidious is wearing an amulet in Episode 1 that Palipitine wears in Return of the Jedi. You can see the amulet in the two pictures above this section. He's also Darth Sidious. That's Ian in the robe.