Twitcher

Twitchers are Necromorphs created from hosts equipped with stasis modules.The Twitchers are the result of the Necromorph infection converting the corpses of people who were equipped with Stasis modules (such as soldiers or security personnel). They are physically similar to Slashers in most respects.

A disturbing side effect of the transformation is that the Stasis modules become fused with the resulting creature, and the effect of the Stasis Module is strangely reversed, with terrifying results. Because of the Stasis Module merged into their bodies, Twitchers can react and move several times faster than any other Necromorph variant, making them very hard to hit before they close in to melee range. It also causes them to have highly erratic and spastic movements, and their features seem to blur as they move when seen close up. Their name is derived from their constant twitching and spasmodic behavior. Their design is similar to that of a Slasher; however, this is hard to notice due to their speed. Their heads, legs, and bodies retain a vaguely human form, albeit much chunkier and muscular than Slashers (likely due to the fact that the infected soldiers or security personnel tend to be more well-built than civilians). Some lack the small chest appendages of the Slashers, but their talons are much larger. Their heads have a massive, hollowed-out indentation on the top of the skull, and tiny tentacles fill the gap. They also seem to be missing both their eyes. Furthermore, their faces seem to be almost static; they never change their facial expression, which is fixed in a blank and hollow stare.

They will often times bend themselves backwards and walk on their human legs and their slashing blades while the talons protruding from their stomach wave in the air. This can cause it to be potentially difficult to dismember them because it protects their blades.