Duplicates/Copies/Mimics/Shapeshifters/Changelings

These creatures known by many names are widely untrusted for one reason. They can change shape. That's it.   Many of these shapeshifting creatures are high in charisma, finding what makes a person tick, and changing into exactly the form needed to complete its goal.   Because of their ability to not only change shape, but manipulate minds, many governments hold these shapeshifters as spies for other countries, giving them long vacations and extravagant lifestyles while in their own grasp so the shapeshifting wouldn't dream of turning on them.   Some shapeshifters of course become their own people, adopting the look of someone they like and slowly changing it to be their own. These shapeshifters are undercover, and often gain the views of people around them, making them indistinguishable from the people around them. People fear these ones the most, despite them being the kindest, and least likely to hurt anyone. Many become attached to the form they take, refusing to change it due to the life they have led in it.   Overall: Cool