This always seemed like a boss that was meant to be flexi/articulated, but I couldn't find any good printable models.  I grabbed the original game files from Models Resource and made a bunch of modifications to make it printable and articulated.

A couple of notes:

• This model is SHARP and not for young children.
• I recommend using the small brim in the 3MF profile to keep the wings from peeling up at the corners during printing.  Very minimal supports required for the last tail section.
• I made the model small enough to fit my A1mini plate, so it is a little delicate.  The 0.15 layer height is recommended if using an A1mini to make the flexi attachments come out right at this scale, but I haven't tested larger layer heights on larger build plates.  You might be able to get away with 0.20 on a scaled up print.

This was a lot of fun and my first true flexi make, so any/all feedback and remixes are totally welcome.  

If there is any interest, I'd consider adding the internal weak points and spiky covers as removable pieces for play/display. Leave a comment if you're interested!