Velma Vista, AKA Giga Lass. While she is normally no bigger than your average dame, By simply absorbing some bio-mass (like from a nearby tree), she can grow up to 3-times her default size to fight the likes of evil. Her suit, which is made using polymorph cells, grows to match her size, as well as change its appearance to look like normal attire so that she can be ready to fight at a moments notice! When in a larger state, she must act quick to save the day, as if she isn't careful, she will burn off all her bio-mass saving the day! Luckily, a few extra feet in size usually gets the job done. Lets just hope her more clumsy nature doesn't get the better of her...

Just wanted to mess around with the concept of giantesses. I know 3 times the normal size isn't super when compared to other characters of her type, but I had to find a way to make her fit in the mutant universe somehow XD. Don't know what to do with her story wise yet, but I have a few ideas.