The unnamed trainer is a character appearing in Pokémon the Series: XYZ.
Season 19: XYZ
This trainer battled with his Scizor against Ash and his Greninja but his Scizor was however defeated by Greninja's Aerial Ace. The trainer asked if Scizor was alright and after seeing Scizor was alright, he recalled it. He then stated that Greninja was really strong before leaving.
|XY119||A Full-Strength Battle Surprise!|