Speaking of Fassbender... I am really curious as to how David gets his head re-attached... He doesn't appear blonde in ANY of the pictures — which is alright considering he dyed it blonde at the beginning of Prometheus. Also, the only indication of his character is the David onboard the Covenant ship in that promotional picture with Ridley. I'm even considering that he doesn't get it re-attached, but that he somehow binds with the Engineer technology (kind of like how Fifield and Holloway became *something more* thanks to having introduced it into their bodies). Maybe Scott and co. will go the biomechanical angle this time around and have the black goo definitively act as a sort of technology instead of it being an ambiguous bio-weapon.