OK, not really, of course, haha. However, in all seriousness, let's say you did have one chance to meet, one, and only one, main character from Avatar: The Last Airebender.
So, here we go:
1)Who do you choose to meet and why? Looking for main characters; e.g. Aang, Katara, Sokka, Toph, Zuko, Azula, etc.
2)They give you one chance to ask one favor of them, like maybe a signature or photo. What do you take?
3)What other questions do you ask them? Maybe about their personality, past life, adventures, etc.
4)Anything else you'd like to add?
The idea may seem cliche...but, have at it.