Which of Ash's currently and formerly trained Kalos Pokémon do you like the best?

I never watched the X and Y series, so I had to go with greninja as it’s my favorite Pokèmon.

I think you underestimate how powerful popular Serena and her Sylveon happens to be. Greninja lost to Sylveon when it was a Froakie and would lose again due to Fairy > Dark matchup. Every time I face one in Z-A, I make sure to Drain Kiss it to defeat.

Not every person is and Amourshippers are still toxic to this day regarding Serena but her Sylveon is a beloved Pokemon (and it deserves it).

Amourshippers are a passionate bunch. They're afraid that they chose the wrong ship so it leads to anger that blossoms into Hate and then suffering for all involved. Cough yes that's the Star Wars Force quote but it fits here cough