Rumble witnessed the fight between the demon boy and big blue. The boy in particular had a lot of power behind him, but he looked more like a villain then a hero. Looks can be deceiving he supposed. There was a struggle near the end where the both of them clashed, but that ended with Blue missing his arms and the boys being tossed away. Fortunately the girl in chrome was there to catch him. Rumble decided if they were going to move in now would be the best time.
"To battle, villain!" Rumble shouted as he marched his robot towards the threat. He flashed his drill arms menacingly before firing a volley of missiles from his back into the air. The drill missiles flew upwards before loosing momentum and angling themselves towards the ground in the vicinity of Rumbles opponent. He then armed himself with drills and activated his booster, flying towards his opponent with as much speed as his suit could muster. Rumble was told that his armor was made of a Titanium Carbon combination, a substance that would be tough for his drill to pierce. But he decided that it was worth a shot. Maybe after the fight Rumble could get this guy's advice on metallic alloys and their various properties. He was getting distracted... first thing he had to do was defeat him!