After he was killed by Sephiroth, Zaydon was walking around the Other World and saw a small planet in front of him.

Zaydon (Kid):  Time to make a quick introduction to the peo-

    Zaydon land's near the house and looks around until he saw a kid that was training.

???:  I'm boooooored!!!

Zaydon (Kid):  Hello!

    A boy that looks older than Zaydon noticed him as he was practicing his techniques.

???:  What, how did you find King Kai's Planet?!

Zaydon (Kid):  King Kai? Who's that?

???:  Well, he's......well, a big, blue, fat guy that lives here with his monkey and grasshopper. Wait, did you die or something?

Zaydon (Kid):  Yes.......just a deadly wound from a fallen angel.

???:  Well.....I don't wanna talk about mine.

    Zaydon looks down and begins to pout until he sits down.

Ghost (Kid):  Ghost.

Zaydon (Kid):  Huh?

Ghost (Kid):  The names Ghost.

Zaydon (Kid):  The names Zaydon.

    It was at this fateful day that these two will be rivals.