Ben Mendelsohn turns up in this ominous shot as what appears to be a Grand Admiral in the Imperial Navy, the Empire's version of the lobster-like Admiral Ackbar on the Rebellion side. The rank insignia on his chest identifies him as an admiral, and the crisp white uniform tells you he's actually a step above. We've seen Grand Admirals in some of the Star Wars extended universe storytelling, most notable Grand Admiral Thrawn from the Timothy Zahn trilogy of books in the early 1990s, but one has never turned up onscreen before.
