Kevin Sidney

Kevin Sidney, also known as Changeling, is a Class 3 mutant from the United States and one of the Exiles.

Biography
Kevin Sidney was born a fully-activated mutant. Hardly ever serious, Sidney attempts to liven up otherwise tense situations with mindless banter, a defense mechanism that he originally created to cope with the loss of his mother from lung cancer at a young age and the hardships he faced while living with his father. He learned early on that his natural, bleached white and noseless appearance was not welcomed among his peers. Rather than be persecuted, he learned to stay in a human form for long periods of time. It wasn't until he joined the X-Men that he stopped disguising himself as a human. However, he did not remain with the X-Men for long, as he left them to join the Exiles.

Powers
Biomolecular Alteration: Changeling is composed of unstable molecules, giving him the ability to shapeshift. His powers seem to only be limited by his imagination and sense of humor. He can transform isolated body parts and is a natural mimic of voices and sounds. He can change the chemical composition of his body into a gas or liquid, and he can fly by developing wings. He can also change his color, stretch, contract, expand, or compress his body. Due to the nature of his mutation, Changeling is extremely durable and resistant to physical damage.

In addition to enabling him to shapeshift, the substance that makes up his physical composition is odorless, making it impossible for him to be tracked.