Theory on the backstory of the Engineers

The one question that stuck with me was “Who created the Engineers?” What if the Engineers were not really our creators but instead just an earlier experiment created by an altogether different race that we haven’t seen yet? It stands to reason that we would have similar DNA to the Engineers and all other races created by these “Creators” as all their children races would come from similar experiments. Perhaps the Engineers were made by the Creators to assist with experiments throughout the Universe and generally to serve, much like David and the Robots were created to serve humans. For a time, the Engineers were treated as children to the Creators and had their place. As part of their duties, the Engineers seeded planets with DNA and then visited them and guided races like us through our development, on behalf of the Creators. Then something happened and humans began to display special characteristics. They began to show more potential than any of the other experimental races including the Engineers. The Creators decide to groom the Human Race to achieve its potential and to some day replace the Engineers – model 2.0. Not able to accept this, the Engineers feel betrayed and turn on the Creators (much like the Robots apparently turn on the humans later in the ‘Alien’ timeline) and there is some kind of a war or rebellion between the Engineers and the Creators. The rebellion goes poorly for the Engineers until, looking for a weapon to fight their makers, they learn of the Xenos – a race even older than the Creators themselves. They manage to harvest old DNA and create a biological weapon from the Xenos. As we’ve seen from all the Alien films where someone has attempted to control them, the Xenos get out of control and become an even bigger threat to the Engineers than the Creators. The Engineers are all but wiped out by the creatures. The remaining few Engineers formulate a desperate action: destroy the human race who are supposed to supplant them. This is meant as strategy (without a replacement will the Creators reconsider their position on the Engineers) and also revenge (the only avenue left to strike back at the Creators). It’s a gamble that fails when a final infestation breaks out preventing the ship that was meant to strike Earth from ever even taking off. Prometheus takes place 2000 years after this failed attempt to kill the human race. Why did the Engineers not make any further attempt during that time? There were none left to do so, or at least none of rebellion Engineers left. Somehow the one Engineer we meet in the film escaped the fate of the others and realizes resumes his mission. Remember, at one time the Engineers took care of the Human Race on behalf of the Creators. I think this is why the Engineer affectionately strokes David’s hair before attacking him. The Engineer was moved by how far the “children” they once cared for had come and perhaps a little sad at all having to kill them. If Shaw succeeds in her plan, she may actually discover all this in Prometheus II. However, in the theme of “children killing their parents”, it’s worth noting that she and David are flying through space with a payload of Xeno bio-weapons in their cargo (assuming their ship is like the other). Will she succeed in her quest to meet the true makers of the human race? Will she inadvertently bring death to the world of remaining Engineers or maybe even to the Creators themselves? “A King has his reign and then he dies.” I guess we’ll find out…