I've printed a ton of these -- actually gave most of them to students in my classes at the University of Kentucky as thank-yous for them having filled-out the course evaluations. Most have been scaled to 50mm or 25mm tall and printed using bronze silk PLA -- the little guy in the first shot is one of the 50mm versions. The large head in the first three shots is scaled to be 300mm wide and was printed on an ANYCUBIC Predator in the worst white PLA filament I have, with a layer height of 0.3mm, double walls, and just 5% fill. As seen in the second shot, it's been sprayed with a textured-finish spray paint that makes a good "canvas" for additional painting as well as obscuring layer artifacts and filling any tiny gaps. The third shot shows the 300mm one finished with an air brush and a protective coat of clear gloss. The fourth photo is a 200mm scale one literally just after my ANYCUBIC Linear Plus completed the print, again in the worst white PLA I have with 0.3mm layers, double walls, and 5% fill. Finally, the fifth image is the 200mm one after my daughter painted it.
Any Brand PLA
Actually, the 300mm one was made on an Anycubic Predator, the 200mm one on an Anycubic Linear Plus, and most of the little ones were done on a MakerGear M2 (which is much faster and does better with metalic-look silk PLA).