I made this voxel model of Mario from Super Mario World.

Use the full file and print in the given orientation (Mario lying on it's back and the stand with the holes upwards).

The single files are for using multiple colors or as replacements.

You may need to use some additional clearance in order to stick Mario into the stand, depending on how well your printer handles clearances. If the sticks are too thick, you can also sand/file them down until they fit. 

Print at any layer height you want (I used 0.2 mm in my tests) and without supports. You may want to use a brim to get sharp corners but it's not necessary if you print at a slower speed.

I will also make a keychain version soon.
 

Happy printing!