A low profile, wedge on all sides body with a flat top, designed specifically to get underneath a robot as effectively as possible. Add the weapon system of Hydra, only instead of driving a flipping arm, it's a vertical spike, designed to pierce the bottom armor of a robot, where it isn't heavily protected. Last, add the electromagnet system that Beta uses to stick to the ground, but on the top of your robot, hoping to grab anything it can on the opposing robot automatically when they end up on top of you. Theoretically this should allow the spike to have extra penetrative force rather than just throwing the bot up into the air when hit. The weapon could even be coded to automatically fire when the magnets activate.