Original Starters in 'Pokemon X' & 'Y'; Gain Mega Evolutions

Charmander, Bulbasaur, and Squirtle will all be making their return in
Charmander, Bulbasaur, and Squirtle will all be making their return in 'Pokemon X' and 'Y' as additional starter Pokemon, and each monster will also receive a Mega Evolution for its final form.

User blog:PrinceoftheFireKingdom/Pokemon X and Y, Adventure Time Wiki

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Original Starters in 'Pokemon X' & 'Y'; Gain Mega Evolutions

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You'll Get Bulbasaur, Charmander And Squirtle In Pokémon X And Pokémon Y