[Phantasm]

I ran into this problem somewhat when statting the Absorbing Man for my Reboot project.

Here's how I ultimately ended up doing him:

Morph (Extra Morphing Capacity: +175; Accessibility: Body of... Meta-Traits Only, -10%; Cannot Memorize Forms, -50%; Mass Conservation, -20%; Needs Sample (Must Touch Subject), -5%; Retains Shape, -20%; Magical, -10%) [195]

In your case, you can change the Magical to Super, or to any power modifier you wish.

I used the Extra Morphing Capacity +175 because several Body Of... meta-traits run that high, primarily Body of Earth, Body of Metal, and Body of Water. Without it, using Morph would limit him to Body of... meta-traits with point values of 0 or less, which a quick scan of GCA with all the files loaded indicates doesn't exist - Body of Fire is the cheapest at 6 points (56 if you want him to have his hands and feet).