I really like the Black Panther bust from Masterclip 3D but I'm not a fan of the stand. I tried doing a plane cut to get just the bust, but the design has a cylinder cutout which actually caused my first attempt to fail when the model's weight tipped it over during printing.
I've simply done the same plane cut and added a much wider/taller cylinder "base" to the back to provide more stability and to fill the gap of the original model. Printed without issue.
Note: The original STL, when loaded into Slic3rPE at least, is still showing a lot of errors that the slicer has to correct for. It printed without issue but I can't speak to if another slicer will be able to successfully work with it.