Appelsian Asteroid Crawler

The Appelsians of Appelse Beta 32 in the Neinverse never suffered a cataclysmic world event that knocked them into a tidally-locked orbit around their system's sun, so half of their world has never been bleached by searing sun 24-7. They're just regular humanoid "people" still out to defeat and decimate their nearest world neighbour, the 85s, who are also still just non-mutated warring people. This little beauty is designed to be dropped onto an orbiting asteroid. It will roll around into position and aim its main gun at anything approaching your planet to blast invading armies into smithereens! Yes, it’s a moving, controllable, big gun!