The role of anti heavy armor firepower in the drone squad of Jupiter is taken by Callisto the third drone of the team, it's a machine that it's at the same time easy and sophisticated, Easy as it's pretty much an A-Grav core mounted on top of long legs with a large powerful plasma cannon strapped under it, the sophisticated part comes from the fact that the plasma cannon have a quite minute size for the firepower it delivers, from dispersion shots to blast few targets at once to single pinpoint beams to punch armored fighting veichles rooftops where they're the more vulnerable.