ok so what do we know so far abut the aliens:
They are earth creatures mutated by a mist.
The mist itself has been on earth for thousands of years
The mist appeared once before and whipped out a race of homosapence that resided on earth.
It came from a meteor named wormwood that crashed into earth.
The homosapence were able to stop it but a the cost of there race.
All the creatures have a connection to something else known as the dead God.
The mist appeared to be intelegent.
The mist itself originated on another planet called yosoth( I think I misspelled it.)
THe aliens are intent on capturing humans as seen in several stories where they have even constructed cages to house the humans.
Apparently the dead God is at the bottom of the ocean where the other aliens feed on it.
The mist is an actual being with an Intelegence, not just a random alien virus that mutates and connects all the creatures. The mist longs to have a body, so it mutates the planet and the planet is its body( like dead space and the necromorphs) the first planet eventually went the way of all living thing and dead out leaving only the mist, before he lost full control the dead God tore a chunk out of itself and hurtled it into space to find more life to create a new body, this is why he is known as the dead God because he has no body and for lack of a better term is a spirit. It landed on pre earth and tried to create a new body but was stopped by the homosapence. Little parts of it remained in the world leading to many strange happening but these were mostly small and unnoticed on a major level until it was freed from permafrost and released into the oceans. Here the dead God learned from his mistake and went on building his forces, he mutated to oceans, calling decendence of those that had been mutated before to join him( hence people walking into the ocean) the mist multiplies and countries blame each other and go to war. The rest is pretty well known.
The mist has been in the ocean the longest so it makes sence that it has already been mutated into a new body for the mist to inhabit, it has some control over this new body as we say in the big egg incident what was discribec as the hand of the dead God rose up and tore a chunk out of an oil rig, and the alein vines referenced in the claimed idol and the most recent briefing are also a part of his body working to take over the rest of the land. The alien creatures that it has been creating are the cartakers of his Body like antibodies is our body. They repair, nurture and defend the body.
What do you think?