Guardian

My original character that's been floating around in my head for a while. I've actually got to the point to where I can put down a few details of his look. Haven't got it all worked out yet though.

He's a part of a set of four characters with very distinct looks.

The plot to date:

A younger guy with silver colored hair, using a sort of limited shift shaping similiar to the villain in Terminator 2.
He runs on a F2 engine. Which is actually a perpetual energy source generated by simultaneous fusion and fission reactions.
His body was original human, and the technology shapes itself into cells that merge with his own.

His creator, or rather enhancer, was a human who slowly replaces all of his body parts to continue the development of the technology.
He also has a prototype of the shape shifting technology, so cannot reshape his body. He doesn't have the engine, so he relies on absorbing matter.