Clash Of Worlds

This is the ultimate war. Four characters including the main from each world have been taken by a higher being. This entity has plotted them against eachother. Once all four characters from each world have died, their world dies. Only one world can live. Who will you choose?
(This is kindof like a hunger games thing but instead of districts, fictional world's, instead of tributes, characters,instead of two, four. Instead of the capital, the entity. You do not have to have read the hunger games to read this, if you saw my list you can tell it's pretty different, I just wanted to give you, my readers, a vague idea of how this will work.)

Worlds included so far are:
Michael Vey
Percy Jackson
The Kane Chronicles
The Darkest Minds
The Darkest Powers
Lorien Legacies