Marker discovery and worshipEdit
Sometime over two million years ago, the aliens existed on the vast water covered planet of Tau Volantis. They are an advanced species both technologically and socially. At some point in time, they discovered an ancient artifact similar to the Black Marker later discovered on Earth by Michael Altman. Soon, the aliens began worshipping the strange artifact which promising them a new, effective, limitless source of energy seemed the bright beacon of a shining future. The aliens built faux Markers across the planet's surface in the hopes of generating more energy that they could use. They would soon discover, however that the Marker was sentient and it would reveal it's true intentions.
Tau Volantis First Convergence EventEdit
Soon, a violent outbreak spread across the planet, killing and converting it's population into monstrosities enslaved to the Marker's will. When enough of the population died to provide a sufficient mass of necrotic tissue, the Markers, drawing power from the creatures began a Convergence Event, the collective mind of the infection attempting to assimilate the planet's dead into a Moon that could continue wreaking biological destruction across the galaxy.
The aliens, however are extremely resourceful, quickly constructing a massive terraforming Machine which flash froze the planet, stopping the Convergence Event and preventing the Moon from continuing it's chain of destruction, but the aliens themselves went completely extinct.
Several million years later, in the year 2311, the Sovereign Colonies Armed Forces discovered the planet and the remains of an alien specimen that they called Rosetta. After studying Rosetta, Dr. Earl Serrano discovered the truth and tried to complete the aliens' unfinished work, but General Mahad received orders invoking a purge of all of the personnel, information and assets on and in orbit of Tau Volantis before Serrano could get the Codex to the Machine.
Over 200 years later, in 2514, an expedition led by Isaac Clarke rediscovered Rosetta and unlocked knowledge of the lost species and their technology, using it to fulfill the aims of Serrano and the aliens: Kill the Moon and stop the threat of the Markers forever. Despite their best efforts, however, the expedition was unable to prevent the remaining Brethren Moons from making their way to Earth to consume it's population.
The Alien anatomy was described extensively by the studies and notes of Dr. Earl Serrano, collected from the data found within a frozen body of one of their kind and amongst calcified bodies found within the underground city that circled the terraforming Machine.
The aliens are mostly fish-like in nature with gills and collapsable fins which allowed Dr. Serrano to deduce that the planet had at one point not been covered in ice, but a vast ocean.
According to Serrano's research, the Aliens communicated with six holes within their skulls that let out harmonic noises with a similar cranial design as human nasal passages. He deduced, however that this was not their primary language form and this method was developed by the Aliens to allow a form of cross species communication. This pseudo-language that they developed was created to convey their information to creatures and beings that found their culture long after their extinction.
The creatures were described and shown as varying in size, some being small and about the same size of a human and others towering to the point of being as tall as a Nexus. The Alien Machine was riddeled with calcified remains of the giants.
- The fact that the Nexus looks similar to the drawings Dr. Serrano has of the Aliens, as well as the fact that the Nexus is about the same size of one of the calcified alien skeletons found around the machine, suggests that the Nexus may be a Necromorph variant of the alien species.
- During the last sequence of Dead Space 3, players will encounter Necromorph variants of the aliens. These Necromorphs, according to Dr. Serrano, were thawed out of ice by the biology team as they attempted to communicate with them, unaware that they were infected monsters and not the alien lifeforms themselves. It is most likely that these alien Necromorphs rekindled the infection in June of 2314.
- Their technology (most notably the Machine) would only function with the Aliens' DNA. Serrano commented on this when realizing the Machine wouldn't work with a Codex programmed by an Alien-turned-Necromorph, hence why Rosetta, frozen solid and preserved from the Necromorphs, was so vital to the project.
- It is noteworthy that the masks worn by Unitologist Slashers (seen during Isaac's trek through the Church of Unitology on Titan Station) bear striking resemblance to the Aliens' heads.