AndresMF's wonderful Flexi Godzilla model had some problems on Slic3r / PrusaSlicer. I found that the main body STL file was being mis-handled and leaving gaps / blank layers for one segment of the body. This version is no different from the original; except for having put the main body STL file through the "3D Builder" app to correct the problematic triangles/manifold. Now the body will print with these slicers at any (reasonable) scale without problem. Enjoy!

NOTE: AndresMF has also updated the original Flexi Godzilla to fix the model - feel free to use his updated Thing Files