Training in the X-Men's Danger Room is not only hard work, it's dangerous too, because the X-Men's toughest opponents are re-created with the X-Men Robot Fighters! Built to fight as skillfully as the actual villains, the Robot Fighters push the X-Men to their limits and beyond. Using alien Shi'ar technology, these specially built drones get better with each attack and present greater and greater challenges to whatever X-Men they face!