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1) When taken from her body, Martha's brain was stored in a glass capsule, filled with fluid and machinery that kept it alive. After Quentin Quire designed an anti-gravity mechanism for it, a leash was attached so that Ernst could pull Martha around like a balloon.
2) The body Kenji created for Martha was made from the same material his own body was made of, a fleshy substance mixed with metallic parts. Martha's brain remained visible and her feminine body was covered with silver armor plating.
3) The body created by the Stark-Self for Martha was metallic and egg-shaped with extendable arms and legs. A holographic face would often appear in front of where Martha's brain was housed.
-) After gifting her new body to Cerebra, Martha has since returned to her classic glass capsule where she remains most comfortable and recognizable.