About this 3D model
I don't know how I've lived my entire life without this. Use supports, I used tree supports. Be careful with the tongue when removing it, or print the no tongue version. It is possible to make it stand on its own but I really recommend using some kind of stand. I used a simple circle but there are many nice ones elsewhere. Scale however you want. The original Pikachu model can be found here and the Homer model here.