I got fun playing with this rig, i did export it to blender 2.74 to get the blender internal render engine that look like more "90's" then cycles or eevee
here is some credits:
-Oreo: Making the majority of the model from scratch.
-YeyoKermit: Modeling the ears.
-Reib: Making the emblem texture.
-Bradleyisgone: Making the mario head rig shape