Greninja Is Set to Make a Come-Back in Pokemon Journeys

gamerant.com:

Greninja is one of the most significant Pokemon from Ash's adventures, as the only character to form a unique and extraordinary bond with his trainer. The Dark/Water-type plays a vital role in the Pokemon X and Y storyline, as he is repeatedly put to the test in the battle to reach his full power potential.

Froakie had always prioritized training above all and chose Ash as the perfect partner, but when his unique skills are needed in Kalos, Greninja sadly leaves Ash's side in a tearful farewell. Pokemon Journeys, however, sees Greninja's return, but fans are wondering if he is here to stay?

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Along with Pikachu and Charizard, many fans consider Greninja to be one of Ash's closest and strongest Pokemon companions, and the Bond Phenomenon is a confirmation of this assumption. Viewers first witnessed this transformation in «A Festival of Decisions!», whereby Pokemon and trainer became one, increasing Greninja's power level to that of a Mega Evolution. During this transformation, the Dark/Water-type adopts physical characteristics from Ash, inheriting black side fins and red stripes to mimick his trainer's style, along with a handy Water Shurikens to boot.

For such a truly unique character to drop out of the Pokemon canon seems strange and unusual, however, Greninja will finally return to Ash's side.

It has been five years since the Flare arc ended, where the fan-favorite Greninja decided to remain in Kalos to help Squishy and Z-2 to irradicate the negative energy-induced root system that was taking over the Region. Besides his appearance in the Pikachu Detective movie, not much has been seen of the popular Pokemon since.

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