Hello, Zuko here. But I guess you probably already know me, sort of. Uh so, the thing is I have a lot of Firebending experience and I'm considered to be pretty good at it. Well you've seen me... you know when I was attacking you? Uh yeah, I guess I should apologize for that, but anyway I'm good now. I mean, I thought I was good before but now I realize I was bad, but anyway... I think it's time I joined your group and taught the Avatar Firebending.
(Camera zooms out to show Zuko is talking to a big frog. The frog croaks)
How am I supposed to convince these people that I'm on their side? What would uncle do? (imitating Iroh) Zuko, you have to look within yourself to save yourself from your other self. Only then will your true self reveal itself. Ugh, even when I'm talking for him I can't figure out what he means. What would Azula do? (imitating Azula) Listen Avatar, I can join your group, or I can do something unspeakably horrible to you and your friends. Your choice! (looks at frog) I guess I'm not that good at impersonations.
(Gazing at Zuko with a dark look) You might have everyone else buying your... "transformation", but you and I both know you've struggled with doing the right thing in the past. So let me tell you something right now. You make one step backward, one slip up, give me one reason to think you might hurt Aang, and you won't have to worry about your destiny anymore. Because I'll make sure your destiny ends, Right then and there. Permanently. (Exits the room, leaving Zuko shocked)
(To himself, after revealing to Aang that he was the one who sent Combustion Man) Ugh, why do I have to be so stupid? How could I tell them that I sent an assassin after them? Couldn't I say that Azula did it? They would've believed that! Stupid! (Hits his head)