Just came across this thread, and I have a couple things that I figure are relevant.
It's all based on an enemy from the Shantae video game series called a Slimegal:
I have a small series of pics of a Slimegal forcing herself on Shantae to become a symbiote-like suit. You can find them at the following links:
http://imgur.com/AU8EYYA
http://imgur.com/UZkAoDV
http://imgur.com/YZwxhhy