The Kabutomushi(Rhino Beetle)? Or the Kuwagata(Stag Beetle)?
I always assume the stag beetle since they can cut clean through almost anything with their razor sharp pincers. Being able to cut a wasp in half like it's made of butter, it's amazing. https://www.youtube.com/watch?v=IbOyBrdp3sU
The most the Rhinoceros can do is flip stuff over which is cool but not as awesome or deadly.
