After some (a lot of) help by Lugia, I have a basic idea of what I will be.
It will be a bipedal Gila Monster in a way, but will have icy breath, and he will have a manipulable pigment, sort of like a chameleon, but he will be able to control it. He also has a very venomous saliva and will have telekinesis. Thick, dry skin will make him able to resist heat, and also be able to resist the cold, and layers of fat between the thick skin, the softer skin, and the muscle tissue will make fragments from explosions or bullets from guns not as damaging to him that much, except in places like the elbows, knees, and neck, or in areas around the head. This will make him a little puffy-looking, or like he is partially made of jello. Now, this won't mean that he's invulnerable, but it does mean he can take a few shots to places that would otherwise be lethal such as the lungs or the heart or other important organs/veins in the torso, legs, and arms.