The real leakleaks is here.(Spoiler alert)

I say its walter. Androids are responsible for carrying main gear. And that view i say its fassbender..thats a Daniels walter scene

This is a leak based on someone who has seen footage of the film and guessed the rest of it. I think the general stuff seems about right...but some of it? totally doesn't make sense

First one being this:

"Together, Daniels and Tennessee manage to kill the Primal Xenomorph and the Neomorphs and detonate explosives to destroy David's laboratory, with David himself apparently perishing in the explosion."

Did anyone else see that Daniels and Tennessee are both running towards the lab we see blow up? why would they be running towards it if they are about to blow it up? I think perhaps someone else blew that up to prevent them escaping paradise.

The other is..you actually see David for a split second in this trailer(blink and you miss it) it's not walter, as the David android is dressed in an Engineer cloak from Prometheus.

Nice try with this, but there's a lot we won't know until its out

@Tiago_miami_la

Indeed its one likely possibility.....

This scene to me has to be after the Drop Ship Blows.. up... which in itself is before Crudrup gets Face Hugged  (likely, as i have studied scenes).

If this is Walter, then it may mean the Face Hugger Scene is after this scene... or its simply David and not Walter in that Scene... hard to tell could be David or Walter.... we see Walter with a Grey-ish top under a Blue Sleeveless Hoody in one scene..  But David wore a Grey Top in Prometheus however Davids seems to be different it is a buttoned Shirt with Pockets... and i am sure his last one was Green,  i will have to watch Prometheus again to see what he was wearing prior to going back down to the surface for the last time.

Infact nope....  these will do

David clearly is wearing a different Shirt under his suit than the one in the Face Hug Scene in Alien Covenant... But Walter could be wearing the same.

I would say this above under the Blue Hoody looks more like the Face Hugger, Egg Cave Shot....

Unless David has time to go find some other clothes before leaves LV-223, or Engineers wear similar lol....

So then we have to ask...  Would Walter lose his Coat then put it back on and his equipment after seeing Crudrup Face Hugged?

Or has David swapped places at this point... which means this Face Hug and any Swap Clothes/Characters would happen after the shot of Daniels and this Character.

Also this shot appears to be before the new shot of Daniels with Blood on her and the Gun off this male Character, which she also has in the scene on the Covenant but has no signs of any cuts....  unless Walter Bleeds?

Also the trailer its hard to make out, but Walter seems to be wearing a different back pack and also has different boots on.  And different equipment....  but the shot i referenced is not as good detailed....

So it could be Walter?

But it could be Franco?

@BigDave-

The belly buster scenario you described sounds interesting. Now that you mention it, it sounds possible except that the cycle duration might be accelerated thus tipping off the audience. Maybe a female could already be pregnant in cryo and get infected on ground having that pregnancy accelerated?

Another idea: Is there anything to refute that a Xeno tail could function like a human phallus to impregnate?

How does the crew, that is running from the neomorphs that were born aboard covenant, run to the forest? wut, does the covenant land? doubt it.. (maybe OP meant the covenant dropship though)and whats the point of planting eggs (i guess OP meant eggs even though OP wrote 'egg embryos) next to frozen embryos? its not like a facehugger can hug an embryo, although if in fact those are some egg embryos next to human embryos we could have mini mini xenos running around and the crew would have to squash them.  and why carry embryos at all... what, to grow them into babies on site? seems like a nice lot of a bunch of born and grown humans would be easier to handle... anyway, on the off chance the OP did see all of this, and just made mistakes trying to describe it. ok, i guess this could be a summary but with loads of things left out, but i don't believe it is (Also notice how the 'synopsis' only mentions the names of the crew members that are listed on Imdb...), i'm calling it it's fan made BS!

One possibility is that David creates the first bio-mechanoid Xenomorph by using Shaw as a host. In Prometheus we see Fifield transforming into a Xenomorph or something akin to it. In the alternate scene, Fifield is clearly turning into a Xeno type creature. By exposing Shaw to the black substance, David becomes a creator. 

It is also possible that David destroys the Engineers still alive on Paradise. This would make sense given his name, which relates to the Biblical David. What did that David do? He slayed the giant Goliath. 

Hey guys, first time poster, not sure if this thread is still going, but I thought I would chime in. Based on the trailer, prologue, wiki page and some interviews I think this summary is essentially on the money.

First we know that at the outset Branson (Franco) is the captain, but given his listing on the wiki page it seems he has a relatively minor role (along with the four cast memebers who stay on the mothership, this is important we will get back to it). In the trailer, we see Daniels asking Archer (Billy Crudup) as captain does he think it is a good idea to go down there because they do not know what is not down there. This indicates Franco does die early and that the planet is not their target destination as surely they would know more about their target destination. We have also seen in alien that the same protocols were in place for Ripley's ship. When it detected what it though was a SOS call (actually was a warning) the ship stopped and took them out of hypersleep. Furthermore, we see Franco is sick in the prologue so this may have led to complications at being taken out of hypersleep unexpectedly. Okay so the opening premise seems credible.

The crew set out packing heat and wary because they do not know anything about this planet, they are on a search and rescue mission. Now on Elizabeth Shaw (Noomi Rapace), I think that is her tag in the clip and I do think she is dead. Rapace was initially meant to play a major role but this was later changed to a minor role and we see from the time she spent on set and the wiki mention she is briefly there. Maybe she escaped.... Doubt it. We have seen key characters getting axed abruptly in this series before, remember Hicks and Newt? Also it seems Daniels is coming in as the lead female protagonist replacing her.

David is unquestionably the antagonist. We have seen in Prometheus he was willing to use people has test subjects. We know he was influenced by his masters wishes and we saw from Wyland's TED talk in the extended scenes he wanted to play God and create a master species. It fits into the lore too. Remember Ash in Alien and then what Bishop said about the older models in Aliens? David is older than Ash and Bishop, the oldest in the series actually. David even says in Prometheus he is able to do things crew members would be uncomfortable with and work on his own initiative to further his/his master's goals. The real deal closer is an interview with Michael Fassbender where I feel he all but confirmed it:

http://www.digitalspy.com/movies/alien/news/a817935/alien-covenant-michael-fassbender-teases-dual-android-roles-david-and-walter/

Here is the relevant text:

Will Walter be quite different to David, we ask. "Yes," says Fassbender with a smile, adding: "I'm not sure what I'm allowed to say."

He does tell us that Walter is "definitely a servant of the ship. We're coming to a period after Prometheus".

At the end of Prometheus, the only survivors were David (David's head in fact) and Elizabeth Shaw (Noomi Rapace).

"As far as we know," says Fassbender.

"But the thing is, obviously, there's been modifications to the… what do they call them? The robots since then. So there's been developments because of some of the things that David had that perhaps were a bit worrying for people - the characteristics..."

Fassbender won't be drawn further, though the track record of androids in the Alien series of films - Ash in Alien, who is acting on dubious secret orders, and Bishop, who becomes a noble ally to Ripley in Aliens - suggests there could be some interesting tension between the two droids.

It does not make sense for it to be Walter, if we agree that the ship is responding to an unexpected mayday and there has been no way for David or Shaw to send out any information. The company simply would not know yet about the aliens and black liquid... Until David gets on board of course.

Okay so I am not sure of the sequencing of deaths and such but I think it is likely that it will come down to Daniels, Tennessee and David. I think that they destroy the labs and they think David but the alien stows away and gets on the mothership or someone else gets on board with a chestburster. I think this because from the wiki page we know 4 crew stay on the mothership. I think the two taking the shower are actors Uli Latukefu and Tess Haubrich. Uli is a tall guy and you can see the girl is on her tippy toes and he still dwarfs her it is hard to be sure but I think it is them, skin tone matches too. I do not think you would go for sexy shower time if you thought your crew mates were in peril down below or there was an alien on the prowl so it seems likely it stows away, takes them and the other 2 on board members out and then the others manage to get it out the airlock. Daniels and Tennessee go into hypersleep and then there is the David reveal.

@Big Dave 

I like the story arc you suggested for David. I'll be disappointed if he turns out to be just another amoral or malfunctioning robot with a God complex. It would be more interesting to me if we eventually discovered that David's actions on the planet had been in the best interests of human survival. Rather than betraying Elizabeth and using her for genetic experiments, maybe he kept her on ice the whole time. Why would he need more than a blood or tissue sample? He could presumably grow or engineer anything else he might require from the initial sample. In the end, maybe all of his efforts could be subverted by someone carrying out the company's agenda and thereby setting dangerous events in motion.

If Elizabeth's DNA was combined with the black goo by David to engineer whatever started the planet's aggressive and rapid process of ecological transformation, after ten years there could be genetic aspects of Elizabeth in every living thing on the planet. Which might eventually culminate in something that looked vaguely like Elizabeth but that definitely was not Elizabeth. Meanwhile, she could spend the entire film in an engineer sleep pod.