"I will show you the ways that I love you
I saved you so you'd save the world
Cause you're the only one"
Sir Greendown is telling Cindi she can be sure about his love; he freed her from her chains and now she can free the others as well. So in this sense, he is her “Neo” — the Messiah who freed her from a life of servitude so she can be the next Messiah for her people. He did this because she is the only one who can do it.
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