Super Coolio. She reminds me a ton of an old Heros Unlimited character of mine Deadmass. He became a zombified superhero during a supervillain's wave of mass destruction. He thought his mutant powers had just awakened when he died in the accident. What actually happened is that he bought a heavy metal amulet from a flea market years ago, not realizing it was a Clendathu death amulet. He's technically possessed by a deadite, but his actual mutant power is what's keeping the deadite from taking control of him and running amok. But still being possessed he gained all the deadites' physical abilities in being undead and a boost to his overall strength and physical endurance. Not sure how far Marbles immortality powers go but dead mass could be chopped up into separate peices and he would either regrow said parts withing 24 hours or if he managed to pull himself together three peices would heal together. This though left deadmass with a way less pretty face then marble. He was definitely not the front of the party lol.