Person at beginning of full Trailer.

Not sure if it's been discussed, but anyone have theory who the guy is at the beginning of the full trailer by the waterfall? I suspect it's not our typical Space Jockey/Engineer, but one of the crew of Prometheus specifically either Mohawk guy or Weyland. My theory is what's in the urns might "infect" a person with God like powers and a Prometheus crew member becomes a hybrid and is actually terraforming his own planet at that starting scene. Might be WAY off base. If its been discussed I missed the original thread. One other question, in the most current tv spot what is Janek/Elba screaming? Sounds like "hadraa!"