Necromorphs

Necromorphs are the main antagonists of the Dead Space franchise. They are mutated and reanimated corpses, reshaped into horrific new forms by a recombinant extraterrestrial infection. The resulting creatures are extremely aggressive and will attack any uninfected organism on sight.

The sole purpose of almost all Necromorphs is to acquire more bodies to convert and spread the infection. They are believed by some to be the heralds of humanity's ascension, but on a more practical level are the extremely dangerous result of exposure to the enigmatic devices known as the Markers.

The Necromorphs are controlled via the Markers by a group of entities known as the Brethren Moons which are massive Necromorphs created once every living organism on an ecosystem unlucky enough to come into contact with a Marker was killed and infected. The Necromorphs' motivations are to create a mass of necrotic flesh to be collected by the Markers during a Convergence Event with the intent to create another Brethren Moon.

In When the Cold Breeze Blows Away, they are first appeared in each space stations,capital spaceships and some locations which under Necromorph infection that they are new neutral alien-like zombified enemies to any living species and any survivors even though they can not attack other undeads since they were controlled via the Markers by a group of entities known as the Brethren Moons.