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.

Mega-Evolved Pokemon - Pokemon X and Y Guide - IGN

24 Best Starter Pokémon Ranked

Pokemon X and Pokemon Y - Kanto Starters Mega Evolution

Every Pokémon That Can Mega Evolve

Mega Evolution - Bulbapedia, the community-driven Pokémon encyclopedia

pokemon x and y mega evolution all starters - Google Search

Pokemon X and Y Guide: Best Starters, Strategies, What to Do, Where to Go

Which Pokemon Did You Get, X Or Y?

Every Starter Mega Evolution Pokemon, Ranked

Pokémon X and Y: Best Teams, How to Level Up, Mega Evolutions

Upcoming Takara Tomy Pokemon toy lineup fuels speculation of Mega Evolutions in Pokemon: Let's Go Pikachu/Eevee, The GoNintendo Archives