Unknown Enemy Race?

Looks a bit like Race 1 is vex, Race 2 is unknown, Race 3 is cabal, Race 4 is fallen (souls escaping the head) and Race 5 is the hive (wizards leave that cloud of smoke)

The Care Bears.

Dark walkers also known as The Absence, basically pure darkness in body form and one of the first two races in existence The story of them starts with nothingness where just one being existed, it lived for many years evolving until one day it evolved to a point until it finally exploded giving its energy to create two beings, one of pure light and one of pure darkness These being set out together creating the universe, to help them with this they used their own energy to create helpers (children of light and dark), these helpers were in charge of creating life formed of both light and darkness to inhabit the twos planets, one of the very first races they created were the Vex, robotic beings able to travel in time and space Everything was well for billions of years until the being of darkness conspired to destroy his brother and cause the destruction of all life, the darkness set about corrupting many races to their cause, after a long battle the being of light managed to over come his brother and his minions and locked him away, but at a great cost, the being of light had little energy left and all his children of light had died horrible deaths so with his last breath he absorbed his children's still screaming souls and using his last bit of energy transformed him self into a sphere, a ship for these souls of light, the sphere travelled the universe until it reached one solar system in particular But his brother thanks to the control of the Vex had foreseen this so using all three of his hearts he placed one with the hive on the moon, one with the Vex on Mars and the last with his minions forced to take the long way to reach the same destination, in all hoping that one day for his minions to be able to gather enough dark energy to help him escape his prison The being of light used the souls of its children to empower the races of this solar system with light energy and created a new race of pure light beings who became known as the ghosts, all would seem well but each time one of the dark beings hearts are destroyed the energy only passes to the next in the chain, the finals destruction will release this god of darkness but with less power Also a few of these children of darkness stowed away with the Vex, spiders for example, are small mischief making A-holes who enjoy nothing more than making others jump, they will do any thing from scratch a walls to dropping objects on you, their laugh is annoying to

Fallen=Elites Cabal=Brutes The Hive=The Flood Vex=Promethean

the pictures with snow i think are supposed to be of jupiters moon europa

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Thats really interesting, I didn't know a 5th enemy was/is planned. I think it will be introduced in the sequels and on other planets. We still have Mercury, which is Vex controlled and we have a Crucible map there, but no story (yet). Humanity colonized Jupiter and Saturn during the golden age, so we might go there some time in the future. The Agents of Nine we know operate from those Gas Giants (Jupiter and Saturn). Maybe the 5th enemy needs gas giants, or is simply operating int eh Darkness (past the reef). Edit. Also we have hints that the Fallen, Hive and Cabal are/were all running away from something. Darkness? 5th Enemy?

Seeing as how in modern culture the pyramid and the all seeing eye symbolize those who are "awake" or "knowledgeable" Im guessing it's the awoken, in which the queen will be our aid. Because her brother wasn't so friendly during our first encounter. I also seen another trailer with a Hunter walking through a space station which appeared to look like the reef. Search it up, you will find it. I know for a fact there is another tower like area in the reef for sure. That's the only place that pretty much pointless on the screen. Please remember this post I'm calling it.

Reptilian race maybe?

I see one of the concept images there's a place covered in snow with some 3 legged bipod machines Got me thinking maybe those belong to the vex, the Fallen have the walkers so maybe that's their heavy unit?