Prusa Slicer 2.0 was used with the default .2mm profile and Generic PLA filament settings.
I used a small support block under the hands to ensure a clean print.
Print times for me:
Head alone: 4hr 10min
Body alone: 11hr 32min
All parts at the same time: 13hr 46min
Paramount filament colors used, in order of filament number:
3- Harajuku Pink
4- Simpson Yellow
5- Decepticon Purple
There are two 3MF files attached. One for just the head and one for the body. The head is just over a four hour print and can be used by itself.
I've also included all the STL files in the proper positioning.
All the supplied files are for the smallest recommended size of the model. The model can be sized up without issue, but I would not recommend sizing it down any further.