Power Rangers Megaforce2013

Gosei:
Just like your Zords, Robo Knight comes from the Earth. I created him centuries ago with the sole mission to protect the Earth's environment. As the guardian of this planet, I knew some day that the Earth might need a powerful protector like Robo Knight. I instilled in this super robot all the admirable qualities a knight should possess. Sharp reflexes, the fearlessness of a lion, and an unwavering commitment to his mission to protect nature. Now the Earth itself has awakened him and called him to action. He will be invaluable to our fight to save this planet from an alien threat.

Troy Burrows:
So he is on our side?

Gosei:
Yes. But after such a long hibernation, it appears he has lost some of his memory. Robo Knight's computer brain clearly doesn't recall that I created him or that you are his allies.

Noah Carver:
Can you fix him?

Gosei:
Robo Knight is a highly complex artificially intelligent machine. He needs to relearn that his mission and yours are the same. Teaching him that will be tricky, but it is up to you to win him over as an ally. That is your challenge.