there are other files on printables to do mmu printing with multiple stl files.
Red from Rainbow Friends by Tdub5 (PrintNPlayToys) | Download free STL model | Printables.com
This is Red from Rainbow friends! He is about 64mm x 110mm x 35mm. In the picture there are 2 different grays. It should only be one, I just ran out of the dark gray in mid print.
He needs supports under his hands. I added a support blocker around his head and part of his chest as my slicer was trying to support that area and it's not needed.
Hope you like it! Don't get oofed!