Zhao quotes from The Last Airbender (2010)

View Quote (to Zuko, who survived his assassination attempt) I killed you.

View Quote (to the Blue Spirit, who unknown to him is Zuko in disguise) Why are you doing this? Who are you?

View Quote As you know, the Fire Lord has banished his son the prince, and renounced his love of him and will not let him return to the throne unless he finds the Avatar! The Fire Lord believes his son is too soft! And by doing this, he will become strong and become a worthy heir to the throne!

View Quote Ozai: Do you think my son is this person the soldiers are calling the Blue Spirit?
Zhao: Yes.
Ozai: Do not harm my son. Leave him to his isolation.
Zhao: You have my word, sire. I will not harm him.
Ozai: And what of the Avatar?
Zhao: We assume he has rejoined with his supporters. It has been confirmed that he's traveling north. It is my strong belief that he is traveling to the Northern Water Tribe. I believe he has only knowledge of his birth element, air, and is trying to learn the discipline of water.