Super Mario - some assembly required

The Models Are not Meant To all be printed, you should choose how you intend to build your Mario and print the Required parts For that. the models are meant to be glued together, they should have a reasonable tolerance to be assembled when printed all at 50% size in each dimensions

the shoulders and the thighs: you may choose to print two of the same version or a different one for each (each of the three type works for both sides).
the versions of the legs are Labeled if they are meant specifically to go on either the right or left side (R/L) and if they are meant to be go with a straight or tilted thigh. a similar thing is done for the mustache.
For the hat and Hair I recommend the latest version.