Ravage: The alien tyrant. Crash landed on earth about 12 years ago. Nobody knows where he came from, but nobody dares to ask. Unknown powers practicaly leak from him, electrifying the air, making it hotter and even making it into solid matter in the form of kinetic energy. He is an outcast to all, except to the X-men. If he can learn to control these powers, then he will become a weapon of mass destruction.
Edit: No X-men symbol on him cos there is nowhere to put it, and he hasn't yet joined them.