When you take a look at all the Pokemon in Pokemon X & Y, you can see that out of all of them it is Zygarde that seems to be the weakest. There has been many rumours about Pokemon Z, which could follow on from Pokemon X &Y and talk about Zygarde playing a stronger role in the game.
Fans of the series hope that Zygarde will be part of the plot for Pokemon Z and they are hoping that Nintendo do a mega evolution for him.
Xernias and Yveltal are both immune to the main types of Zygarde and mega Zygarde would be able to reverse the order. Immunities could become weaknesses. Each mega evolution will give Zygarde 100 points, this is added to the base stats, and this would put it on the same platform as mega Tyranitar and mega Garchomp.
When it comes down to the plot, it should relate to the Pokemon ecosystem, which could go wrong and of course Zygarde could be the key to fixing it. Xernias and Yvelal should also play a big role in Pokemon Z. Xernias is similar to a tree, while Yveltal is the cocoon and Xygarde will be the larvae.
It is going to be very interesting to see how Nintendo plans on pulling it off and we have no idea as to whether it will happen through a DLC or if Nintendo will launch Pokemon Z.
