While Pokemon Legends: Z-A didn't give players the option of starting their game with the original Gen 6 starters, that doesn't mean you can't still acquire them. As was shown in promotional trailers ...

In order to obtain Fennekin in Pokémon Legends: Z-A, you’ll need to complete a specific Side Quest that the game doesn’t directly point you toward, so it’s best to go in well-prepared if you want to ...