Shoggoth_

An ambush style predator from an unknown part of space. Originally these being somehow made their way onto spaceships that had visited far away worlds. These shapeshifting predators where eventually give then name of Imposter due to their shapeshifting abilities to imitation crewman of those ships including voices.

Some are hyper hostile and will attack anyone how is alone. Others kill to protect their true identity. And few hunt to eat but otherwise try to get along with those they are blending in with.

Shoggoth here is one that played nice and ate sustain herself. Some thst she grew to trust even know about her true self.