In Rogue One, a hooded character acts as an assistant to Darth Vader. He kneels before the Sith Lord and informs about the arrival of Director Krennic. Wookieepedia states that his name is Vaneé. Is it possible that he and Kren Blista-Vanee, an Imperial Ruling Council member in Return of the Jedi, are the same character? To me, at least, their appearances look somewhat similar (considering they're some 4 years apart, in the in-universe timeline).
Kren Blista-Vanee is mentioned in the canon novel Tarkin, set fourteen years before Rogue One, as a newcomer to the Imperial Ruling Council:
Fond of wearing flamboyant hats and frequenting the opera, Blista-Vanee was a relative newcomer to the Ruling Council, but had already proven an asset in blazing hyperspace routes into the Deep Core star systems.
Tarkin Chapter 15: "Negative Capability"
The career trajectory that leads one to transition from the Ruling Council to Vader's lackey over a fourteen year period, only to re-ascend to the Ruling Council within the next four years, boggles my mind; it's astronomically unlikely that they could be the same person.
Novelization merely calls him "Black-cloacked aide" and doesn't name him. The name "Vane*" doesn't appear in the text at all.