Your hair is white, your eyes are green. You can pass through walls. You can become invisible. You can fly. You can shoot green plasma rays out of your hands. You have a ghostly wail, and the power to freeze things at will. Your legs disappear and turn into a ghostly tail.
You're not a human. You're not a ghost. You don't belong in either world. You're now a freak among humans, and a freak among ghosts. You're not one of them. You're half dead and half alive. I'd say, you're a Halfa.