I was wondering who it could be, the White Marine in the trainer on the Hyperion, so I snapped a screenshot for a good look at who's inside...no one. Or at least, that ain't a normal Marine suit.
So yeah, what's up with that? Blue visor, the stuff inside it? Either the person is wearing another mask or helmet or something inside the suit, or there's flat no one in the suit at all, so AI?









