The House Robot Rebellions were special battles in Robot Wars Extreme: Series 1 and Robot Wars: The Seventh Wars. In these battles contestants fought the House Robots, who were allowed the freedom of the arena for the duration of the battle. In Extreme 1, the winner was the robot that was standing at the end of the battle, whilst in the Seventh Wars, it was the side that had defeated the other. Extreme 1 featured Dead Metal, Shunt and eventually Matilda, whilst the Seventh Wars featured the three newest House Robots; Growler, Mr. Psycho and Cassius Chrome.