Sammy

Explanation: Unlike everyone else you can change your body materia and transform into anything (e.g. an animal). This can be used in good purposes for infiltrating evil headcuarters or adjust your physical abilities by transforming and therefor do better in battle. If turned to the evil side, a transfomer could manipulate the "good guys" by looking like their loved ones and break them down.
As a person you are dissapointed with life. You have not so many interests anymore and has become depressed. Of course you can be happy, but your happiness subsides quickly and don't last very long. You isloate yourself from people since you think they would only hurt you, but some part just wants someone equal who understands the pain. When you transform it gives you freedom and you can be anything but yourself. You often pity yourself but don't let people come near and know what's going on with you. But the thought of opening up and risking being betrayed is too strong and intimidating to even try.
Negative aspects: You carry much hate to the world and yourself and in the long run this could lead to dangerous thoughts (suicide/cutting/killing) though the last one is least likeable since you would probably just have too much guilt.

Not greedy by nature, the Satisfied knows of what they have achieved and earned, and feels content with that. Materialistic impulses happen rarely, if ever, and they don't value possessions and trends nearly as much as most do. The Satisfied usually have a calm personality and tend to be full of care, whether they are open with it or not. Of course they can be selfish, but their selfless nature proceeds that by far.
Downsides are that the Satisfied may be taken advantage of, in the likes of favours per se. It is in their nature to help, and they can be big push-overs when it's about injustice towards themselves. Also, since they don't want to bother their peers and close ones, they keep most of their problems inside. If this builds up they may start to suffer in silence, a completely unnecessary act.
Because they have a hard time to say no, and since people may use them, with time the Satisfied could grow hateful and distrusting. However, it appears now, that they are not. They reckon that some people are bad news and stay away from them. They stay with their own group of trusted people instead. As the Satisfied's name implies, they don't seem to have any dreams or goals. That is a perception not quite true. As any other human being, they do have them. But the difference is, that the Satisfied are content with their life even if the dream would not come true.
Quote:"It is not length of life, but depth of life." -Ralph Waldo Emerson