The fight between the Rangers and Robo Knight was tragic as it was very epic. However in this episode there are no Legendary Ranger Modes, since of course the keys were turned to stone. Another interesting thing in this episode is that Troy charges up to emit energy and free Robo Knight. It's like if he wanted to go Super Saiyan. Interestingly, Andrew Gray loved DBZ as a child. Of course, who doesn't love DBZ? As for the action, this episode featured loads of footage from Goseiger.
God Bless and May The Power Protect You!