Iceman's powers were pushed to their limit while possessed by Emma Frost, who used Iceman to discover the fate of her Hellions. During this time Iceman was able to control all forms of moisture, freeze fluids inside people's bodies, travel as a liquid, solid or gas. Not even the combined might of the X-Men Gold team was able to stop Emma Frost in Iceman's body. Following this, Bobby confronted Emma about how she was able to use his powers so effectively. While together they made some initial progress, she refused to train him further. Instead he turned to Storm because they share similar elemental powers and she agreed to tutor him.