How well do you know your Pon and Zi?

How much do you know about the sometimes gory, yet adorable emo dolls?

1 How many main characters are there?
2 Who likes who more?
3 Who likes to cry whether happy or sad?
4 Who is the boy and who is the girl?
5 Don't look back, what was the first question I asked?
6 Was this a good quiz?
7 Where did you learn about Pon and Zi?