Star Wars: Rogue One Teaser Breakdown - 25 Things You Need To See

5. Whitaker's Speech

"What will they do when they catch you? What will you do if they break you?" rasps Whitaker's character over all of this, a clear warning to Jyn and her team about the sheer insurmountable odds they're facing and a furthering of the moral debate the film (or at least the trailer) is trying to raise.

This is the sort of anti-mentor advice you'd expect from either a side-character appearing for a couple of scenes around the mid-point, or a hero ahead of returning at the last moment. So, yeah, one of those roles is what he's probably playing.