Changeling

Changelings naturally have a humanoid shape but are also distinct in their own ways; their skin, hair and eyes are naturally pale, and their facial features are often somewhat flattened.

Their true strength lies in their namesake; being able to change forms at will. There are some restrictions such as needing to maintain the same amount of limbs, but for the most part a changeling can become any other humanoid figure.

This comes with a few downsides, however, including that they are widely not trusted because many of the most infamous assassins, spies, and people of the like have been changelings, because if they can look like anyone that makes infiltration that much easier.