Marvel: Hydrokinesis

Robert Drake (Iceman)
Iceman can use surrounding moisture to augment himself, allowing him to travel within large bodies of water very quickly. He accomplishes this by breaking himself down to his base levels and reforming at the destination. He is able to convert his body to gigantic proportions as well, through absorption of a body of water or water vapor in the air. One side effect of this is he gains superhuman strength to match his superhuman size. Wherever there is any moisture, Iceman is a threat. Iceman has demonstrated the ability to be transformed into nothing more than water vapor, yet remain conscious and retain the use of his powers. His conscious control of his abilities has allowed him to exist simultaneously in two places at once.