Thanks for the extension! Guess I'll finish this up tomorrow:
First off, I made it look more physical by giving it bigger, stronger arms and also a pair of legs. They are covered in armor padding that can break away, in reference to Weak Armor.
The antennae on its head are also a bit bigger and sharper. They look more like horns now so that it can actually utilize Megahorn.
The bottom of the main body is more curved instead of pointed because scarab beetles have rounded bodies.
So if you have anymore suggestions, better make them now since I'll be finishing this in about 24 hours.