Another caped character seen only from behind. The timeline of this story, just prior to the original Star Wars, means Darth Vader is alive and at his peak during the events of Rogue One. Is this him, approaching a glowing, cylindrical tank? This shadowy figure doesn't really move like Vader, though. That tube is flanked by the crimson colored Royal Guard, who are like the secret service, protecting Emperor Palpatine -- who also could appear in this film. In fact, maybe this is him...