copy right of models from Disney or anything

As far as I know so long as the artist has not protected their content you can print and sell your own version of the models. In some cases so long as you made enough variation of a certain model and call it a spoof or imitation model you can even sell something like a Disney product but it can't be an exact copy of the original unless the company gives you special permission. I think Hasbro or the company who makes My Little pony allow you to make those and sell them as exact copies so long as you give them a percentage of your earnings either directly on on a website... it may be thingyverse...