Pikachu has a battle win rate of 89% in 538 battles, proving to be Ash's strongest Pokemon. Greninja showcases a win rate of 87% in 55 battles, transforming into Ash-Greninja to secure victories.

Q. Who was the first Ash Ketchum Pokemon in the series? - + A. Pikachu is the first Ash Pokemon in the series. Q. Which was the last Pokemon that Ash Ketchum caught in the Pokemon series?