Latch

In the beginning where they showed that guy (and I thought 'woah, this dude's in the hatch') I noticed in a profile shot (when he was looking in his periscope thing) that his face had pockmark/scars/stuff like that. I thought "awesome, they put willem dafoe on the show!"

Then they did a similar profile of the dude running on the steps... and I thought "hmm.. that looks familiar" haha.

I agree with Moskie's thoughts. This guy has run into everyone at some point in the past, and orchestrated a lot of what is seen and heard. I'm just not sure why/what/how.

At least we have (part) of the "who".