Greninja, the shadow of Pokemon, is bound by the evolutionary condition that the trainer has a trust relationship with Greninja. The specific settings are as follows:

The fetter phenomenon caused by the fetter and trust relationship between the trainer and the package can stimulate the potential of the package. Legend has it that it only appeared once in Carlos Ninja Village hundreds of years ago.

Animation "Bao XY": Xiao Zhi will become like this when he is in sync with his mood.

It is mentioned in the package list in the annotation of the comic book X Y6 that Huayi's "Guagua" is characterized by changes.

In the game "Sun and Moon Experience Edition", Xiao Zhi will present Greninja to the protagonist, and Greninja can become this form through the trigger feature of knocking down his opponent.

Illustration of Greninja:

Xu: Compress water to make shuriken. Let it spin and fly at high speed, even the metal can be split in half.

Y: Like a ninja. Fight your opponent with agile movements, and then chop him with the shuriken of Water.

Or: compress water to make shuriken. Let it spin and fly at high speed, even the metal can be split in half.

AS: Like a ninja. Fight your opponent with agile movements, and then chop him with the shuriken of Water.