Darth Vader also makes an appearance but apparently the bounty hunters too. According to Bleeding Cool “Ben Mendelsohn’s new Moff character is indeed the big baddie of Rogue One. The other main villains of the piece are bounty hunters hired by the Moff to quietly retrieve the stolen Death Star plans at all costs.
Vader factors in once he realizes that the plans have been stolen, so he joins the hunt in a supporting role and is none too pleased.”
Lucasfilm’s Rogue One, which takes place before the events of Star Wars: A New Hope, tells the story of unlikely heroes who have united to steal plans to the dreaded Death Star.
Anyway, check out the new footage below.
Source: Bleeding Cool