Alien: Xenomorph

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Last Survivor --- Escaping the Nostromo /// the Xenomorph on the Shuttle Narcissus --- /// Alien: the creature in the wall. So the Xenomorph would integrate itself with the surrounding machinery and the top of its head would be indistinguishable from the surrounding pipes even close to. The Alien originally has a four day lifespan and the reason it hide within the Narcissus is because it is looking for a perfect place to die alone.