Bio-engineered assassin

A species bio-engineered a perfect assassin, but the creature proved to be uncontrollable and unstoppable. Possessed of a cunning intelligence and physical superiority, it had the ability to mimic voices and could blend into the natural environment like a chameleon. After killing the scientific team that had created it, the creature placed itself in suspended animation until new prey presented itself. After a great deal of time, the creature was released by expedition IL5 who were investigating the ruins of the bio-engineering base used to create the creature. Free from its slumber, the creature began to stalk and kill the research team.