[Bane]

Originally Posted by Luder

I just read an article online, Vanity Fair or something like that that has a theory of who the stranger could be

Spoiler!

rumour is that since the stranger was wearing spurs, it might be Boba Fett

Spoiler!

In that final clip where the mysterious figure approaches the body, you can hear the sound of an Imperial probe droid before the sound of spurs. My money is on it being Moff Gideon.